Represents information pertaining to interest rate swaps terminating in July 2028. Interest Rate Swaps Terminating in July 2028 [Member] Interest rate swaps terminating in July 2028 Available-for-sale Securities Interest Rate Swaps Terminating in July 2023 [Member] Represents information pertaining to interest rate swaps terminating in July 2023. Interest rate swaps terminating in July 2023 Interest Rate Caps Terminating in September 2014 [Member] Represents information pertaining to interest rate caps terminating in September 2014. Interest rate caps terminating in September 2014 Warrant Issued under TARP [Member] TARP warrant Represents the warrant issued to U.S. Department of the Treasury under the Troubled Asset Relief Program (TARP). The unused portion of a construction loan that is available to the borrower to withdrawn upon. Unused Portions of Construction Loans [Member] Unadvanced portions of construction loans Available for Sale Securities Specified Percentage by Which Book Value Exceeds Stockholders Equity Excluding US Government and Federal Agencies Securities Specified percentage by which book value exceeds stockholder's equity of securities of any single issuer other than U. S. Government and federal agencies securities Represents the specified percentage by which book value exceeds stockholder's equity for securities categorized neither as held-to-maturity nor trading securities other than securities issued by U. S. Government and federal agencies. Schedule of Disposal Groups, Including Discontinued Operations Income Statement [Table Text Block] Summary of operations of the Company's investment brokerage division Tabular disclosure of disposal groups operations. Troubled Debt Restructuring Payment Default Number of Days Number of days a TDR payment is in default Represents the number of days payments are past due before a TDR is consider to be in default. Payments for Redemption of Preferred Stock and Warrants Redemption of preferred stock and warrants The cash outflow for redemption of preferred stock and warrants. Redemption of Preferred Stock and Warrants Redemption of preferred stock and warrants Represents redemption amount of currently redeemable preferred stock and warrants. Amendment Description Redemption of Preferred Stock and Warrants, Shares Redemption of preferred stock and warrants (in shares) Represents the number of redeemable preferred stock and warrants. Amendment Flag Extended Maturity [Member] Extended maturity Represents information pertaining to extended maturity modification by troubled debt restructurings related to financing receivables. Adjusted interest rate Represents information pertaining to adjusted interest rate modification by troubled debt restructurings related to financing receivables. Adjusted Interest Rate [Member] Protective Advance [Member] Protective advance Represents information pertaining to protective advance modification by troubled debt restructurings related to financing receivables. Represents information pertaining to other modification by troubled debt restructurings related to financing receivables. Other Modification [Member] Other Rate and Maturity [Member] Rate and maturity Represents information pertaining to rate and maturity modification by troubled debt restructurings related to financing receivables. Represents information pertaining to the principal deferment modification by troubled debt restructurings related to financing receivables. Principal Deferment [Member] Principal deferment Court ordered concession Represents information pertaining to modification due to court ordered concession by troubled debt restructurings related to financing receivables. Court Ordered Concession [Member] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Accretable Yield Other Changes Other changes Represents the other changes in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans not accounted for as debt securities. This relates to loans not accounted for as a debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition that the investor will be unable to collect all contractually required payments receivable. Schedule of amounts recognized in income related to both hedge ineffectiveness and amounts excluded from effectiveness testing Tabular disclosure of amounts recognized in income related to both hedge ineffectiveness and amounts excluded from effectiveness testing. Schedule of Fair Value Hedge Ineffectiveness [Table Text Block] Unpaid principal balance The undiscounted amount of principal on loans with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Unpaid Principal Accretable Yield Accretable yield Accretable Yield. Nonaccretable Difference. Nonaccretable Difference Nonaccretable difference Financing Receivable Recorded Investment 90 Days Past Due and Nonaccrual Past Due 90 Days or More-Nonaccrual Financing Receivable Recorded Investment 90 Days Past Due and Nonaccrual. Troubled Asset Relief Capital Purchase Program Troubled Asset Relief Capital Purchase Program Disclosure [Text Block] The entire disclosure for participation in troubled asset relief capital purchase program. Troubled Asset Relief Capital Purchase Program Troubled Asset Relief Capital Purchase Program Troubled Asset Relief Capital Purchase Program [Line Items] Current Fiscal Year End Date Award Type [Axis] Document and Entity Information Gain (Loss) on Sale of Loans Held For Sale Gain on sales of loans held for sale The gain (loss) resulting from the sale of loans held for sale. Gain on sales of loans held for sale Gain (Loss) on Sale of Loans Held for Investment Gain on sales of portfolio loans The gain (loss) resulting from the sale of loans held for investment. Gain on sales of portfolio loans Transfer of Loans to Foreclosed Assets Transfers from loans to real estate owned and other repossessed collateral The value of loans transferred to foreclosed assets in a non-cash transaction. Troubled Debt Restructurings on Financing Receivables by Accrual Status [Table Text Block] Troubled debt restructurings by accrual status Tabular disclosure of financing receivables and troubled debt restructurings classified by accrual or non-accrual status. Schedule of Credit Impaired Loans [Table Text Block] Information related to the unpaid principal balance and carrying amounts of ASC 310-30 loans Tabular disclosure of the unpaid principal balance and carrying amount of purchased credit impaired loans. Schedule of Allowance for Loan Losses by Portfolio Segment and Impairment Methodology [Table Text Block] Schedule of allowance for loan losses by portfolio segment and impairment methodology Schedule of Allowance for Loan Losses by Portfolio Segment and Impairment Methodology. Troubled Debt Restructurings on Financing Receivables Recorded Investment [Table Text Block] Schedule of loans modified in a TDR and the change in the recorded investment subsequent to the modifications Tabular disclosure of the recorded investment in financing receivables and troubled debt restructurings. Document Information [Table] Loan Portfolio Originated [Member] Loan portfolio originated by the reporting entity. Originated Purchased Loan portfolio acquired in a transfer. Loan Portfolio Purchased [Member] Financing Receivable Modifications Forgiveness of Principal Forgiveness of principal related to loans modified in a TDR Represents the amount of principal forgiven for financing receivables that have been modified by troubled debt restructurings. Document Period End Date Residential and consumer loans Loan or extension of credit for personal, family, or household use including real estate. Consumer Residential Real Estate [Member] Financing Receivable Loans Classified as Troubled Debt Restructurings that are Involved in Bankruptcy Collateral dependent impaired loans Loans for which the borrower's obligation was discharged in bankruptcy in a prior period and now considered collateral dependent impaired loans. Northeast Bancorp 2010 Option and Incentive Plan [Member] 2010 Plan Represents information pertaining to the Northeast Bancorp 2010 Option and Incentive Plan (the 2010 Plan). Represents information pertaining to the Northeast Bancorp Amended and Restated 2010 Stock Option and Incentive Plan (the Restated Plan). Northeast Bancorp Amended and Restated 2010 Option and Incentive Plan [Member] Restated Plan Exercise Price One [Member] $9.38 Represents information pertaining to the first exercise price. Exercise Price Two [Member] $12.63 Represents information pertaining to the second exercise price. Exercise Price Three [Member] $13.93 Represents information pertaining to the third exercise price. Notional amount Derivative, Notional Amount Exercise Price Four [Member] $14.52 Represents information pertaining to the fourth exercise price. Exercise Price Five [Member] $12.44 Represents information pertaining to the fifth exercise price. Entity [Domain] Projected Share Based Compensation Expense Year One 2014 Represents the share-based compensation expense projected for the first fiscal year following the reporting date. Projected Share Based Compensation Expense Year Two 2015 Represents the share-based compensation expense projected for the second fiscal year following the reporting date. Projected Share Based Compensation Expense Year Three 2016 Represents the share-based compensation expense projected for the third fiscal year following the reporting date. Projected Share Based Compensation Expense Year Four 2017 Represents the share-based compensation expense projected for the fourth fiscal year following the reporting date. Projected Share Based Compensation Expense Year Five 2018 Represents the share-based compensation expense projected for the fifth fiscal year following the reporting date. Projected Share Based Compensation Expense Year Total Total This element represents the total projected share-based compensation expense. Document and Entity Information Entity Information [Line Items] Represents the maximum number of shares of all classes of stock permitted to be issued by the reporting entity. Shares Authorized Shares authorized Accumulated Other Comprehensive Income (Loss) Taxes Tax effect The tax effect of the accumulated change in equity from transactions and other events and circumstances from non-owner sources. Derivative Additional Collateral Requirements Additional collateral requirements Represents the amount of additional collateral required to settle derivative contracts. Number of derivative agreements terminated prior to maturity Represents the number of derivative contracts terminated prior to maturity. Derivative Number of Contracts Terminated Prior to Maturity Represents information pertaining to the Black-Scholes option-pricing model. Black-Scholes option-pricing model Black Scholes Option Pricing Model [Member] First Tranche [Member] Represents the first tranche in which shares were vested. First tranche Hull White Option Pricing Model [Member] Represents information pertaining to the Hull-White option pricing model. Hull-White option pricing model Second Tranche [Member] Represents the second tranche in which shares were vested. Second tranche Stock Options with Market Based Conditions [Member] Contract which gives the holder the right, but not the obligation, to purchase a certain number of shares of stock. These options vest based on the achievement of specified performance goals. Stock options with market-based conditions Third Tranche [Member] Represents the third tranche in which shares were vested. Third tranche Tranche Type [Domain] Information by the tranche under which an employee receives the right to exercise an award. Vesting Period 29 December 2010 To 29 December 2015 [Member] Represents the vesting period under tranche from December 29, 2010 through December 29, 2015. December 29, 2010 through December 29, 2015 Vesting Period 29 December 2010 To 29 December 2016 [Member] Represents the vesting period under tranche from December 29, 2010 through December 29, 2016. December 29, 2010 through December 29, 2016 Vesting Period 29 December 2010 To 29 December 2017 [Member] Represents the vesting period under tranche from December 29, 2010 through December 29, 2017. December 29, 2010 through December 29, 2017 Vesting Period 29 December 2015 To 29 December 2016 [Member] Represents the vesting period under tranche from December 29, 2015 through December 29, 2016. December 29, 2015 through December 29, 2016 Vesting Period 29 December 2016 To 29 December 2017 [Member] Represents the vesting period under tranche from December 29, 2016 through December 29, 2017. December 29, 2016 through December 29, 2017 Tranche Type [Axis] Identification by the tranche under which an employee receives the right to exercise an award. Share Based Compensation Arrangement by Share Based Payment Award, Fair Value Assumptions Weighted Average Fair Value Per Option Weighted average fair value per option (in dollar per share) Represents the weighted average fair value per option under the assumption that is used in valuing an option on its own shares. Represents the incremental weighted average fair value per option under the assumption that is used in valuing an option on its own shares. Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Incremental Weighted Average Fair Value Per Option Incremental weighted average fair value per option (in dollar per share) Share Based Compensation Arrangement by Share Based Payment Award, Number of Employees to Whom Options Granted Number of executives to whom options were granted Represents the number of employees to whom options were granted under the equity-based compensation plan. Share Based Compensation Arrangement by Share Based Payment Award Number of Tranches Number of tranches in which options were granted Represents the number of tranches in which options were granted under the equity-based compensation plan. Share Based Compensation Arrangement by Share Based Payment Award Options Applicable Hurdle Price Applicable hurdle price (in dollar per share) Represents the applicable hurdle price of the options, that varies depending on the number of years that have elapsed since the date of grant, immediately before the modification. Share Based Compensation Arrangement by Share Based Payment Award Options Amended Hurdle Price Amended hurdle price (in dollar per share) Represents the amended hurdle price of the options after the modification. Vesting Period 29 December 2010 to 28 December 2015 [Member] Represents the vesting period under tranche from December 29, 2010 through December 28, 2015. December 29, 2010 through December 28, 2015 Vesting Period 29 December 2010 to 28 December 2016 [Member] Represents the vesting period under tranche from December 29, 2010 through December 28, 2016. December 29, 2010 through December 28, 2016 Represents the vesting period under tranche from December 29, 2010 through December 28, 2017. December 29, 2010 through December 28, 2017 Vesting Period 29 December 2010 to 28 December 2017 [Member] Vesting Period 29 December 2015 to 28 December 2016 [Member] Represents the vesting period under tranche from December 29, 2015 through December 28, 2016. December 29, 2015 through December 28, 2016 Vesting Period 29 December 2016 to 28 December 2017 [Member] Represents the vesting period under tranche from December 29, 2016 through December 28, 2017. December 29, 2016 through December 28, 2017 Payments for Regulatory Stock Purchases of regulatory stock The cash outflow for purchases of regulatory stock. Junior Subordinated Debt Securities [Text Block] Junior Subordinated Debentures Issued to Affiliated Trusts This element represent Junior Subordinated Debentures Issued to Affiliated Trusts. Junior Subordinated Debentures Issued to Affiliated Trusts Junior Subordinated Debentures Issued to Affiliated Trusts This element represent Junior Subordinated Debentures Issued to Affiliated Trusts. Summary of Significant Accounting Policies [Table] Information related to various accounting policies of the entity. Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies Troubled Asset Relief Capital Purchase Program [Table] Schedule reflecting information pertaining to the troubled asset relief capital purchase program. Leasehold and Building Improvements [Member] Leasehold and building improvements Additions or improvements to assets held under a lease arrangement, and addition, improvement, or renovation to a facility held for productive use including, but not limited to, office, production, storage and distribution facilities. Furniture, Fixtures and Equipment [Member] Furniture, fixtures and equipment Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities, and tangible personal property used to produce goods and services. Summary of operations Summary of Operations [Abstract] Schedule of Composition of Deposits [Table Text Block] Schedule of composition of deposits Tabular disclosure of composition of deposits. Entity Well-known Seasoned Issuer Tabular disclosure of scheduled maturities of time certificates by fiscal year. Schedule of Maturities of Time Certificates [Table Text Block] Schedule of maturities of time certificates Entity Voluntary Filers Other Time Certificates Other time certificates Represents the amount of other time certificates. Entity Current Reporting Status Schedule of Finite Lived Intangible Assets Including Goodwill [Table Text Block] Schedule of changes in the carrying amount of intangible assets Tabular disclosure of assets, including goodwill, lacking physical substance with a finite life, by either major class or business segment. Entity Filer Category Schedule of Finite Lived Intangible Assets Including Goodwill [Table] Schedule of assets, including goodwill, lacking physical substance with a finite life. Entity Public Float Finite Lived Intangible Assets Including Goodwill [Line Items] Changes in the carrying amount of intangible assets Entity Registrant Name Amount of assets, excluding financial assets and goodwill, lacking physical substance with a finite life sold or disposed. Finite Lived Intangible Assets Sold or Disposed Assets sold or disposed Entity Central Index Key Income Tax Reconciliation Non Taxable BOLI Income Non-taxable BOLI income The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to non-taxable BOLI income under enacted tax laws. Deferred Tax Assets Loan Basis Differential Loan basis differential Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loan basis differential. Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from time deposit basis differential. Deferred Tax Assets Time Deposit Basis Differential Time deposit basis differential Deferred Tax Assets Capital Lease Capital lease Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from capital leases. Entity Common Stock, Shares Outstanding Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from interest on nonperforming loans. Deferred Tax Assets Interest on Nonperforming Loans Interest on nonperforming loans Limited partnerships Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from limited partnerships. Deferred Tax Assets Limited Partnerships Deferred Tax Liabilities Borrowings Basis Differential Borrowings basis differential Amount of deferred tax liability attributable to taxable temporary differences from borrowings basis differential. Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on available-for-sale securities. Deferred Tax Liabilities Unrealized Gains on Available For Sale Securities Unrealized gain on available for sale securities Income Taxes Additional Disclosures [Abstract] Additional disclosures Amount of provision for potential liability that would result, if 100% of the reserve were recaptured Represents the amount of provision for potential liability that would result, if specified percentage of reserve were recaptured. Amount of Provision for Potential Liability that would Result if Specified Percentage of Reserve Recaptured Represents the percentage of amount actually used subject to taxation in the year in which it was used for purposes other than to absorb the losses for which it was established. Percentage of Amount Actually used for Purposes other than to Absorb Losses Subject to Taxation in Year in which Used Percentage of amount actually used for purposes other than to absorb losses subject to taxation in the year in which used Percentage of reserves recaptured Represents the percentage of reserve for loan losses recaptured. Percentage of Reserve for Loan Losses Recaptured Represents the eligible age for all participants under the defined contribution plan. Defined Contribution Plan Eligible Age for Participants under Plan Eligible age for full-time salaried and hourly-paid employees under 401(k) plan Completed employment required for full-time salaried and hourly-paid employees under 401(k) plan Represents the period of service required for all participants under the defined contribution plan. Defined Contribution Plan Period of Service for Participants under Plan Deferred Compensation Arrangement with Individual Number of Senior Officers Number of senior officers Represents the number of senior officers under the deferred compensation arrangement with entity. Dividends from banking subsidiary Represents the amount of dividends earned from banking subsidiary during the period. Dividends from Banking Subsidiary Maturities in year one Period of maturity for a group of securities or other assets sold under repurchase agreements which mature within twelve months from the reporting date. Maturities within One Year [Member] Maturities in Year Two [Member] Maturities in year two Period of maturity for a group of securities or other assets sold under repurchase agreements which mature in second year from the reporting date. Maturities in Year Three [Member] Maturities in year three Period of maturity for a group of securities or other assets sold under repurchase agreements which mature in third year from the reporting date. Maturities in Year Four [Member] Maturities in year four Period of maturity for a group of securities or other assets sold under repurchase agreements which mature in fourth year from the reporting date. Securities Sold under Agreements to Repurchase Unpaid Principal Balance Unpaid Principal Balance The unpaid principal balance as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Document Fiscal Year Focus Represents the present value of the capital lease payments over a specified period as a percentage of the fair value of the property. Capital Leases Present Value of Payments as Percentage of Fair Value of Property Present value of the lease payments as a percentage of the fair value of the property Document Fiscal Period Focus Tier One Risk Based Capital to Risk Weighted Assets [Abstract] Tier 1 capital to risk weighted assets Tier One Leverage Capital to Average Assets [Abstract] Tier 1 capital to average assets Compliance with Regulatory Capital Requirements Under Banking Regulations Additional Disclosures [Abstract] Additional disclosures Deposits NBN Capital Trust II [Member] NBN Capital Trust II Represents information pertaining to NBN Capital Trust II, a Delaware statutory trust. NBN Capital Trust III [Member] NBN Capital Trust III Represents information pertaining to NBN Capital Trust III, a Delaware statutory trust. NBN Capital Trust IV [Member] NBN Capital Trust IV Represents information pertaining to NBN Capital Trust IV, a Delaware statutory trust. Common Securities of Trust Common securities of trust Represents the amount of common securities of trust. Represents the principal balance of trust preferred securities issued. Trust Preferred Securities Principal Balance Unpaid Principal Balance of Private Trust Securities issued Trust Preferred Securities Interest Rate Contractual Rate of Private Trust Securities issued (as a percent) Represents the interest rate of trust preferred securities issued. Debt Instrument Percentage Increase in Variable Rate Basis for Recognition of Higher Interest Expense Percentage increase in three-month LIBOR for recognition of higher interest expense Represents the increase in variable rate basis for recognition of higher interest expense of the debt instrument. Legal Entity [Axis] Number of Private Placement Offerings in Which Securities are Sold Number of private placement offerings in which securities are sold Represents the number of private placement offerings in which securities are sold. Document Type Trust Preferred Securities Liquidation Amount Liquidation amount per Preferred Security Represents the per share liquidation amount of the trust preferred securities. Summary of Significant Accounting Policies Federal Home Loan Bank and Federal Reserve Bank Stock [Policy Text Block] Federal Home Loan Bank and Federal Reserve Bank Stock Disclosure of accounting policy for federal home loan bank and federal reserve bank stock. Loans Held for Sale and Loan Servicing [Policy Text Block] Loans Held for Sale and Loan Servicing Disclosure of accounting policy for loans held for sale and loan servicing. Bank Owned Life Insurance [Policy Text Block] Bank Owned Life Insurance Disclosure of accounting policy for bank owned life insurance. Amortization of Intangible Assets, Continuing Operations The aggregate expense charged against earnings from continuing operations to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Intangible asset amortization Line of Credit Federal Home Loan Bank of Boston [Member] Represents details about the line of credit from the Federal Home Loan Bank of Boston. Line of credit FHLB Boston Carrying Amount FHLB Advances [Member] Represents the carrying amount of advances from the Federal Home Loan bank. Carrying amount of FHLB advances NBN Capital Trust II Debenture Maturing March 30 2034 [Member] Represents details concerning the NBN Capital Trust II Debenture that matures on March 30, 2034. NBN Capital Trust II Debenture maturing March 30, 2034 Represents details concerning the NBN Capital Trust III Debenture that matures on March 30, 2034. NBN Capital Trust III Debenture maturing March 30, 2034 NBN Capital Trust III Debenture Maturing March 30 2034 [Member] NBN Capital Trust IV Debenture Maturing February 23 2035 [Member] NBN Capital Trust IV Debenture maturing February 23, 2035 Represents details concerning the NBN Capital Trust III Debenture that matures on February 23, 2035. Federal Home Loan Bank Advances Maturities Summary Due from Five to Six Years of Balance Sheet Date Amount of Federal Home Loan Bank advances maturing in the sixth fiscal year following the latest fiscal year. 2018 Loan Portfolio Serviced for Others Loans serviced for others Represents the amount of loans serviced for others. Share Based Compensation Arrangement by Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value Exercisable, beginning of year (in dollars per share) Represents the weighted average grant date fair value of options exercisable as calculated by applying the disclosed option pricing methodology. Exercisable, end of year (in dollars per share) Represents the weighted average grant date fair value of options forfeited or expired as calculated by applying the disclosed option pricing methodology. Share Based Compensation Arrangement by Share Based Payment Award, Options Forfeited and Expired Weighted Average Grant Date Fair Value Forfeited or expired (in dollars per share) Fair Value Asset and Liability Transfer Amount between Fair Value Measurement Levels Transfers of assets and liabilities measured at fair value on a recurring or nonrecurring basis Amount of transfers of assets and liabilities between the fair value measurement levels. Receivable Type [Axis] Represents the purchased loans expressed as a percentage of total loans. Purchased Loans as Percentage of Aggregate Loans Purchased loans as a percentage of total loans Represents the percentage of loans funded with core deposits which is defined as non-maturity deposits and non-brokered insured time deposits. Percentage of Loans Funded with Core Deposits Percentage of loans funded with core deposits Represents the commercial real estate loans including owner-occupied commercial real estate loans held, expressed as a percentage of total risk-based capital. Commercial Real Estate Loans Held as Percentage of Risk Based Capital Commercial real estate held as a percentage of total risk-based capital Deferred Income Tax Expense (Benefit) Continuing Discontinued Operations Deferred income tax (benefit) provision The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing and discontinued operations. Total deferred (benefit) provision Loans Acquired in Transfer Not Accounted for as Debt Securities Accretable Yield Activity [Table Text Block] Summary of the activity in the accretable yield for loans accounted for under ASC 310-30 Tabular disclosure of changes in the aggregate excess of loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Number of securities in a continuous loss position for greater than twelve months Represents the number of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. Number of Available For Sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses Interest Rate Swaps Terminating in February 2015 [Member] Interest rate swaps terminating in February 2015 Represents information pertaining to interest rate swaps terminating in February 2015. Interest Rate Swaps Terminating in July 2033 [Member] Interest rate swaps terminating in July 2033 Represents information pertaining to interest rate swaps terminating in July 2033. Schedule of Impaired Financing Receivables Interest Recognized [Table Text Block] Schedule of interest income recognized on impaired loans Tabular disclosure of interest recognized on impaired financing receivables. Tabular disclosure of the recorded investment in financing receivables and troubled debt restructurings subsequently defaulted. Schedule of loans that have been modified during the past twelve months which have subsequently defaulted Troubled Debt Restructurings on Financing Receivables Subsequent Default [Table Text Block] Contractually required payments receivable Certain Loan Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Contractually Required Payments Receivable at Acquisition Represents the amount of contractually required payments receivable at the acquisition of acquired loan not accounted for as debt securities with the evidence of deterioration of credit quality. Certain Loan Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Cash Flows Expected to be Collected at Acquisition Represents the amount of cash flows expected to be collected at the acquisition of acquired loan not accounted for as debt securities with the evidence of deterioration of credit quality. Cash flows expected to be collected Represents the amount of cash flows expected to be collected at the acquisition of acquired loan not accounted for as debt securities with the evidence of deterioration of credit quality. Fair value of loans acquired Certain Loan Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period at Acquisition at Fair Value Gross Unrealized Gains Available for Sale Securities Accumulated Gross Unrealized Gain before Tax Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Available for Sale Securities Accumulated Gross Unrealized Gain before Tax Gross Unrealized Losses Available for Sale Securities Accumulated Gross Unrealized Loss before Tax Available for Sale Securities Accumulated Gross Unrealized Loss before Tax Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Nonaccrued Income Receivable [Member] Nonaccrual Represents the information pertaining to fees and other revenue not recorded as of the balance sheet date. Proceeds from Repayment of Federal Home Loan Bank Advances Proceeds from (repayment of) FHLB advances Represents amount of cash inflow and outflow from proceeds of Federal Home Loan Bank (FHLB) advances. Stock Repurchase Program Percentage of Shares Authorized to be Repurchased Percentage of shares authorized to be purchased Represents the percentage of outstanding common shares authorized to be repurchased by an entity's board of directors under a stock repurchase plan. Accounts, Notes, Loans and Financing Receivable Accounts, Notes, Loans and Financing Receivable [Line Items] Amortization of securities, net Accretion (Amortization) of Discounts and Premiums, Investments Accretion of fair value adjustments, net Accretion Expense Accrual Accrued Income Receivable [Member] Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Unrealized loss on available-for-sale securities Accumulated Net Unrealized Investment Gain (Loss) [Member] Accumulated other comprehensive loss Net-of tax amount Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Member] Unrealized loss on cash flow hedges Hedge gain Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Accumulated other comprehensive loss components Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated other comprehensive loss components Accumulated Other Comprehensive Income (Loss) [Table] Before tax Accumulated Other Comprehensive Income (Loss), before Tax Additional paid-in capital Additional Paid in Capital Additional Paid-in Capital Additional Paid-in Capital [Member] Amortization Amortization Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Accretion of preferred stock Adjustments to Additional Paid in Capital, Other Offering costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Investment in common securities of affiliated trusts Advances to Affiliate Federal Home Loan Bank Advances from Federal Home Loan Banks [Abstract] Total Advances from Federal Home Loan Banks Advertising Expense Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] Stock-based compensation expense Allocated Share-based Compensation Expense Schedule of allowance for loan losses by portfolio segment Allowance for Credit Losses on Financing Receivables [Table Text Block] Charge-offs Allowance for Loan and Lease Losses, Write-offs Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Intangible asset amortization Amortization of intangible assets Amortization Amortization of Intangible Assets Amortization of fair value adjustment for borrowings Amortization of Debt Discount (Premium) Antidilutive Securities [Axis] Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Anti-dilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Securities or Other Assets Sold under Agreements to Repurchase, Maturity Periods [Axis] Total assets Assets Assets Financial assets: Assets: Assets [Abstract] Assets recorded under capital lease Assets Held under Capital Leases [Member] Assets Sold under Agreements to Repurchase, Maturity Period [Domain] Fair Value, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Securities Available-for-Sale at Amortized Cost and Fair Values Available-for-sale Securities [Table Text Block] Unrealized Losses, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss Unrealized Losses, Total Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss Due within one year, Fair Value Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due after five years through ten years, Fair Value Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Unrealized Losses, More than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss Fair Value, More than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Due within one year, Amortized Cost Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due after five years through ten years, Amortized Cost Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Available-for-sale securities, at fair value Available-for-sale securities, Fair Value Available-for-sale securities Securities available-for-sale Available-for-sale Securities Investment securities at fair value pledged as collateral for borrowings Available-for-sale Securities Pledged as Collateral Fair Value, Total Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Due after ten years, Amortized Cost Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Due after ten years, Fair Value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Amortized Cost Available-for-sale securities, Amortized Cost Available-for-sale Securities, Amortized Cost Basis Due after one year through five years, Fair Value Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due after one year through five years, Amortized Cost Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Gross realized losses Available-for-sale Securities, Gross Realized Losses Gross realized gains Available-for-sale Securities, Gross Realized Gains Net securities gains Net gain on sale of available-for-sale securities Net security gains Available-for-sale Securities, Gross Realized Gain (Loss) Balance Sheet Location [Axis] Balance Sheet Location [Domain] Bank-owned life insurance income Bank-owned life insurance income, net Bank Owned Life Insurance Income Bank owned life insurance Bank Owned Life Insurance Capital and Regulatory Matters Basis of Presentation Basis of Accounting [Text Block] Borrowings Borrowings [Member] Buildings Building [Member] Business Combination Accounting Business Combinations Policy [Policy Text Block] Bargain purchase gain Bargain purchase gain Business Combination, Bargain Purchase, Gain Recognized, Amount 2015 Capital Leases, Future Minimum Payments Due in Two Years Total Capital Leases, Future Minimum Payments Due 2018 Capital Leases, Future Minimum Payments Due in Five Years Capital lease obligation Capital Lease Obligations [Abstract] Imputed interest Capital Leases, Future Minimum Payments, Interest Included in Payments Actual Amount Capital Capital lease obligation Capital Lease Obligations Total capital to risk weighted assets Capital [Abstract] 2016 Capital Leases, Future Minimum Payments Due in Three Years 2017 Capital Leases, Future Minimum Payments Due in Four Years Minimum lease payments over the remaining term of the lease and the outstanding capital lease obligation Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2019 and thereafter Capital Leases, Future Minimum Payments Due Thereafter 2014 Capital Leases, Future Minimum Payments Due, Next Twelve Months Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Ratio (as a percent) Capital Required to be Well Capitalized to Risk Weighted Assets Minimum Capital Requirements Ratio (as a percent) Total risk-based capital ratio (as a percent) Capital Required for Capital Adequacy to Risk Weighted Assets Minimum Capital Requirements Amount Capital Required for Capital Adequacy Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Amount Capital Required to be Well Capitalized Actual Ratio (as a percent) Capital to Risk Weighted Assets Carrying Amount Reported Value Measurement [Member] Cash and due from banks Cash and Due from Banks Cash Cash Net increase (decrease) in cash and cash equivalents Interest income (expense) on hedge ineffectiveness related to next twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Total cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments Cash Equivalents, at Carrying Value Cash or deposits reserve balances Cash Reserve Deposit Required and Made Supplemental schedule of noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Cash flow hedge Cash Flow Hedging [Member] Reclassifications to accretable yield Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Disposals and other Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Accretable Yield, Disposals of Loans Summary of loans acquired by the Company accounted for under ASC 310-30 Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block] End balance Beginning balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Acquisitions Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Disposals and transfers Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period [Abstract] Reclassifications from nonaccretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Carrying amount Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Authorized Shares Class of Stock [Line Items] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Number of shares repurchased by common stock warrant Class of Warrant or Right, Number of Securities Called by Warrants or Rights Troubled Asset Relief Capital Purchase Program Class of Stock [Domain] Commercial Real Estate Commercial real estate Commercial Real Estate Portfolio Segment [Member] Commercial business Commercial Business Commercial business loans Commercial Loan [Member] Commercial Business Commercial business Commercial Portfolio Segment [Member] Construction Construction loans Commercial Real Estate Construction Financing Receivable [Member] Commercial real estate Commercial Real Estate Commercial real estate mortgages Commercial Real Estate [Member] Commitments and Contingencies Commitments and contingencies Commitments and Contingencies. Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Voting common stock Voting Common Stock Common Stock [Member] Common stock Common Stock, Value, Issued Common stock, issued Common Stock, Shares, Issued Cash dividends declared per common share (in dollars per share) Dividends on common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Common stock, shares authorized Common Stock, Shares Authorized Dividends on common stock at $0.09 per share for the three month ended September 30, 2012 and 2013, respectively (in shares) Common Stock Dividends, Shares Common stock, outstanding Common Stock, Shares, Outstanding Employee Benefit Plans Capital and Regulatory Matters Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Deferred tax assets Components of Deferred Tax Assets [Abstract] Significant portions of the deferred tax assets and deferred tax liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Other Comprehensive Income Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Concentration Risk Type [Domain] Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration Risk Type [Axis] Balance Sheets Condensed Balance Sheet Statements, Captions [Line Items] Condensed Income Statement [Table] Condensed Cash Flow Statement [Table] Statements of Cash Flow Condensed Cash Flow Statements, Captions [Line Items] Condensed Parent Information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Statements of Income Condensed Income Statements, Captions [Line Items] Condensed Parent Information Condensed Balance Sheet Statement [Table] Principles of Consolidation Consolidation, Policy [Policy Text Block] Consumer Consumer Portfolio Segment [Member] Consumer Consumer Loan [Member] Core Deposit Intangible Core Deposits [Member] Expenses: Costs and Expenses [Abstract] Total expenses Costs and Expenses State Current State and Local Tax Expense (Benefit) Current provision (benefit) Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) Total current provision (benefit) Current Income Tax Expense (Benefit) Loans rated 9 Doubtful [Member] Variable interest rate basis Debt Instrument, Description of Variable Rate Basis Wholesale Repurchase Agreements Junior Subordinated Debentures Issued to Affiliated Trusts Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Spread on variable rate basis (as a percent) Debt Instrument, Basis Spread on Variable Rate Borrowings Borrowings Debt Disclosure [Text Block] Term of capital leases Term of outstanding letters of credit Debt Instrument, Term Debt Instrument [Axis] Weighted Average Cost Debt, Weighted Average Interest Rate Cost of Junior Subordinated Debentures issued to affiliated trusts (as a percent) Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Name [Domain] Deferred compensation liability Deferred Compensation Arrangement with Individual, Recorded Liability Prepaid expenses Deferred Tax Liabilities, Prepaid Expenses Unearned Restricted Stock Deferred Compensation, Share-based Payments [Member] Deferred compensation expense Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Deferred Compensation Arrangements [Abstract] Unearned restricted stock Deferred Compensation Equity Unrealized loss on available for sale securities Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Total deferred tax liability Deferred Tax Liabilities, Gross Federal Deferred Federal Income Tax Expense (Benefit) Deferred (benefit) provision Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Total deferred (benefit) provision Deferred Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Net deferred tax liability Deferred Tax Assets, Net Derivative basis differential Deferred Tax Assets, Derivative Instruments Total deferred tax asset Deferred Tax Assets, Gross Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Other Deferred Tax Assets, Other Deferred compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Other Deferred Tax Liabilities, Other Allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Premises and equipment Deferred Tax Liabilities, Property, Plant and Equipment Goodwill and other intangible assets Deferred Tax Liabilities, Goodwill and Intangible Assets Unrealized loss on derivatives Deferred Tax Assets, Unrealized Losses on Trading Securities Maximum employees contribution as a percentage of their base compensation Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employer match of employee contributions of first 6% of base compensation (as a percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer contributions Defined Contribution Plan, Cost Recognized 401(k) Plan Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] Demand Demand Deposit Accounts Deposits Deposit Liabilities Disclosures [Text Block] Money market Deposits, Money Market Deposits Total deposits Deposits Deposits. Deposits Composition of deposits Deposits [Abstract] Deposits Deposits, Fair Value Disclosure Regular savings Deposits, Savings Deposits NOW Deposits, Negotiable Order of Withdrawal (NOW) Deposits Deposits [Member] Depreciation of premises and equipment Depreciation Depreciation and amortization of premises and equipment included in occupancy and equipment expense Depreciation, Depletion and Amortization Other liabilities Interest rate swaps Fair Value of liabilities Derivative Liability Cash collateral balance Derivative, Collateral, Right to Reclaim Cash Derivatives and Hedging Activities Derivative [Line Items] Fair Value Derivative Assets (Liabilities), at Fair Value, Net Maturity term Derivative, Remaining Maturity Derivative Instrument [Axis] Weighted average maturity Derivative, Average Remaining Maturity Derivative [Table] Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivatives and Hedging Activities Interest rate swaps Other assets Fair Value of assets Derivative Asset Index Derivative, Description of Variable Rate Basis Strike Rate (as a percent) Derivative, Cap Interest Rate Receive Rate (as a percent) Derivative, Average Fixed Interest Rate Pay Rate (as a percent) Derivative, Average Variable Interest Rate Number of derivative instruments held Number of derivative instruments Derivative, Number of Instruments Held Derivative Contract [Domain] Hedging Relationship [Axis] Interest income (expense) on hedge ineffectiveness and excluded from effectiveness testing Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Derivatives Derivatives, Policy [Policy Text Block] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Income tax (benefit) expense Discontinued Operation, Tax Effect of Discontinued Operation Income tax expense (benefit) (Loss) income before tax Income (loss) from discontinued operations before income tax expense (benefit) Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Gain on sale of discontinued operations Pre-tax gain recognized Pretax gain on sale of customer lists and certain fixed assets of an agency office Gain on sale of assets Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Discontinued Operations Discontinued Operations, Policy [Policy Text Block] Income from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Severance and other direct expenses Pre-tax gain recognized Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax Discontinued Operations Fixed assets, net of accumulated depreciation Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net Gain on sale of assets of insurance division Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Customer lists and other intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets, Net Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Sale proceeds Disposal Group, Including Discontinued Operation, Revenue Dividends on common stock at $0.27 per share for the nine month ended March 31, 2014 and 2013, respectively Dividends, Common Stock Dividends on preferred stock Dividends, Preferred Stock Basic: Earnings per common share: Earnings Per Share, Basic [Abstract] Weighted-average shares outstanding: Earnings Per Share, Basic, Other Disclosures [Abstract] Diluted: Diluted earnings per common share: Earnings Per Share, Diluted [Abstract] Earnings Per Share (EPS) Earnings Per Share [Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Net Income (in dollars per share) Earnings Per Share, Basic Net Income (in dollars per share) Earnings Per Share, Diluted Earnings per common share: Earnings Per Share (EPS) Statutory federal income tax rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Stock options Employee Stock Option [Member] Tax benefit related to stock-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Investment in subsidiary Equity Method Investments Equity Component [Domain] Equity securities Equity Securities [Member] Total Estimate of Fair Value Measurement [Member] Measurement Frequency [Axis] Fair Value Measurements, Recurring and Nonrecurring [Table] Financial instruments which represent credit risk Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Fair Value, Hierarchy [Axis] Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Measurement Frequency [Domain] Measurement Basis [Axis] Fair Value Assets And Liabilities Measured On Nonrecurring Basis Fair Value Assets And Liabilities Measured On Recurring Basis Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Measurements Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Fair Value Hierarchy [Domain] Schedule of assets measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurement [Domain] Schedule of estimated fair value of the Company's financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Subordinated debentures Subordinated Debt Obligations, Fair Value Disclosure Level 3 Fair Value, Inputs, Level 3 [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Commitments and contingencies Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Federal Home Loan Bank Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] FDIC insurance premiums Federal Deposit Insurance Corporation Premium Expense Advances from FHLB Boston Federal Home Loan Bank of Boston [Member] Federal Home Loan Bank Branch [Axis] General disclosures Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract] Available line of credit arrangement with the FHLB Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Regulatory stock Federal Home Loan Bank and Federal Reserve Bank stock, at cost Federal Home Loan Bank Stock and Federal Reserve Bank Stock Federal Home Loan Bank Branch [Domain] FHLB advances Federal Home Loan Bank Advances Loans pledged as collateral with the FHLB for borrowings Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Federal Home Loan Bank stock, at cost Federal Home Loan Bank Stock 2017 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Five 2017 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Four to Five Years from Balance Sheet Date Total (as a percent) Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate 2015 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date 2014 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two Weighted Average Cost Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract] 2014 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date Federal Reserve Bank stock, at cost Federal Reserve Bank Stock 2013 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due within One Year of Balance Sheet Date 2016 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Three to Four Years from Balance Sheet Date Carrying Amount Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract] Additional capacity to borrow Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available 2018 Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, after Five Years from Balance Sheet Date 2018 Federal Home Loan Bank, Advances, Maturities Summary, Due after Year Five 2013 Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months 2016 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four Federal Home Loan Bank advances Total Long-term Federal Home Loan Bank Advances 2015 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three Fees for other services to customers Fees and Commissions, Other Loans Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Standby letters of credit Financial Standby Letter of Credit [Member] Financial Instrument [Axis] Financing Receivable, Modifications Financing Receivable, Modifications [Line Items] Past Due 90 Days or More-Still Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Non-Accrual Loans Financing Receivable, Recorded Investment, Nonaccrual Status Number of Contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment ASC 310-30 Financing Receivable, Acquired with Deteriorated Credit Quality Number of Contracts Financing Receivable, Modifications, Number of Contracts Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses [Line Items] Recorded Investment Recorded Investment Post-Modification Financing Receivable, Modifications, Post-Modification Recorded Investment Recorded Investment Pre-Modification Financing Receivable, Modifications, Pre-Modification Recorded Investment Individually evaluated Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Recorded Investment Financing Receivable, Recorded Investment [Line Items] ASC 310-30 Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality 30-59 Days Financing Receivable, Recorded Investment, 30 to 59 Days Past Due Loans, Allowance for Loan Losses and Credit Quality Financing Receivables [Text Block] Total TDRs Financing Receivable, Modifications, Recorded Investment Class of Financing Receivable [Domain] 60-89 Days Financing Receivable, Recorded Investment, 60 to 89 Days Past Due Allowance for loan losses: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Financing Receivable, Impaired Financing Receivable, Impaired [Line Items] Individually evaluated Financing Receivable, Individually Evaluated for Impairment Total Current Financing Receivable, Recorded Investment, Current Schedule of the Company's loans by risk rating Financing Receivable Credit Quality Indicators [Table Text Block] Class of Financing Receivable [Axis] Total Past Due Financing Receivable, Recorded Investment, Past Due Collectively evaluated Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Domain] Collectively evaluated Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Amortization period Finite-Lived Intangible Asset, Useful Life Gross carrying amount Finite-Lived Intangible Assets, Gross 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five Components of identifiable intangible assets Finite-Lived Intangible Assets [Line Items] 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated annual amortization expense associated with intangible assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Balance at the beginning of period Balance at the end of period Net carrying amount Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five 2014 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two Identifiable Intangibles Finite-lived Intangible Assets [Roll Forward] Real estate owned and other possessed collateral, net Real estate owned and other repossessed collateral Repossessed Assets Total gain on sale of discontinued operations Gain (Loss) on Disposition of Real Estate, Discontinued Operations Loss on disposal of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Net (gain) loss on sale of available-for-sale securities Gain on sales of loans held for sale Income on hedge ineffectiveness Gain on Fair Value Hedge Ineffectiveness Gain recognized on real estate owned and other repossessed collateral, net Gain on sale and impairment of real estate owned and other repossessed collateral, net Gains (Losses) on Sales of Other Real Estate General and administrative expenses General and Administrative Expense Balance at the end of period Balance at the beginning of period Goodwill Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Assets sold or disposed Goodwill, Written off Related to Sale of Business Unit Goodwill Goodwill [Roll Forward] Intangible Assets Hedging Relationship [Domain] Home equity Home Equity Line of Credit [Member] Interest Income Recognized, with a valuation allowance Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method Average Recorded Investment, with a valuation allowance Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Schedule of Impaired Loans Impaired Financing Receivables [Table Text Block] Interest Income Recognized, without a valuation allowance Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method Recorded Investment, with a valuation allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Unpaid Principal Balance, without a valuation allowance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Recorded Investment Collateral dependent impaired loans Impaired Financing Receivable, Recorded Investment Recorded Investment, without a valuation allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Average Recorded Investment, without a valuation allowance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Unpaid Principal Balance, with a valuation allowance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Interest Income Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Income from continuing operations (in dollars per share) Income from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Discontinued operations: Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity in undistributed net income of subsidiary Undistributed earnings of subsidiary Income (Loss) from Equity Method Investments Net Income from continuing operations Net income from continuing operations Income (Loss) from Continuing Operations Attributable to Parent Uncertain tax positions related to federal and state income tax matters Income Tax Examination, Estimate of Possible Loss Income from continuing operations before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share CONSOLIDATED STATEMENTS OF INCOME Loss before income tax benefit and equity in undistributed net income of subsidiary Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income Taxes Discontinued operations of the entity's investment brokerage division Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income from continuing operations (in dollars per share) Income from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Net income from discontinued operations Income Taxes Income Tax Disclosure [Text Block] Income from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Income tax expense Total tax provision Income tax benefit Income Tax Expense (Benefit) Reconciliation between the statutory federal income tax rate and the effective tax rate on income from continuing operations Effective Income Tax Rate Reconciliation, Amount [Abstract] Income taxes paid, net Income Taxes Paid (Loss) income before equity in undistributed net income of subsidiary Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Net income (loss) from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Expected income tax expense at federal tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Income Taxes Income Tax, Policy [Policy Text Block] State tax, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Non-taxable interest income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Low-income housing tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount Net increase in deposits Increase (Decrease) in Deposits Interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other liabilities Increase (Decrease) in Other Operating Liabilities Changes in other assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Other assets and liabilities Increase in other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Repayment of FHLB borrowings and wholesale repurchase agreements Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Other assets Increase (Decrease) in Other Operating Assets Increase (Decrease) in Stockholders' Equity Data processing fees Information Technology and Data Processing Insurance commissions Insurance Commissions and Fees Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Interest and dividend income: Income: Interest and Dividend Income, Operating [Abstract] Interest on loans Interest and Fee Income, Loans and Leases Interest on available-for-sale securities Interest and Dividend Income, Securities, Operating, Available-for-sale Interest expense: Interest Expense [Abstract] Total interest expense Interest expense Hedge gain reclassified as interest expense Interest Expense Total interest and dividend income Interest and Dividend Income, Operating Short-term borrowings Interest Expense, Short-term Borrowings Deposits Interest Expense, Deposits Junior subordinated debentures issued to affiliated trusts Interest expense Interest Expense, Junior Subordinated Debentures Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Obligation under capital lease agreements Interest Expense, Lessee, Assets under Capital Lease Wholesale repurchase agreements Interest Expense, Securities Sold under Agreements to Repurchase Net interest and dividend income before provision for loan losses Interest Income (Expense), Net Net interest and dividend income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Interest paid Interest Paid Interest rate swap Interest Rate Swap Interest Rate Swap [Member] Accrued interest receivable Interest Receivable Interest rate caps Interest Rate Caps Interest rate cap Interest Rate Cap [Member] Savings and interest checking Interest-bearing Deposit Liabilities Interest rate Interest Rate Contract [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Investment commissions Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions Schedule of amortized cost and fair values of available-for-sale debt securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Securities Available-for-Sale Investments in NBN Capital Trust affiliates Investments in and Advances to Affiliates, Amount of Equity Securities Available-for-Sale Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Junior subordinated debentures issued to affiliated trusts Carrying Amount of Junior Subordinated Debentures issued to affiliated trusts Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Lease term Lessee Leasing Arrangements, Operating Leases, Term of Contract Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Salaries and employee benefits Labor and Related Expense Land Land [Member] Rental expense Operating Leases, Rent Expense Lease Obligations Leases, Operating [Abstract] Legal settlement recovery Legal Fees Total liabilities and stockholders' equity Liabilities and Equity Liabilities Financial liabilities: Liabilities [Abstract] Total liabilities Liabilities Liabilities and Stockholders' Equity Liabilities and Stockholders' Equity: Liabilities and Equity [Abstract] Letter of credit Line of Credit [Member] Litigation Case [Domain] Litigation Case [Axis] Loan acquisition and collection expense Loan Portfolio Expense Commitments to originate loans Loan Origination Commitments [Member] Consumer Loans and Leases Receivable, Gross, Consumer Loans Loans and Leases Receivable, Gross, Carrying Amount [Abstract] Allowance for Loan Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Loans Loans [Member] Construction Loans and Leases Receivable, Gross, Consumer, Construction Less: Allowance for loan losses Ending balance Beginning balance Total Loans and Leases Receivable, Allowance Residential real estate Loans and Leases Receivable, Gross, Consumer, Real Estate Loans loans Total loans Loans and Leases Receivable, Gross Loans held for sale Loans Receivable Held-for-sale, Net Amount of loan transactions with related parties Loans and Leases Receivable, Related Parties Commercial and industrial Loans Receivable, Gross, Commercial and Industrial Loans, net Loans and Leases Receivable, Net Amount Loans held for sale Loans Held-for-sale, Fair Value Disclosure Real Estate Owned and Other Repossessed Collateral Loans and Leases Receivable, Real Estate Acquired Through Foreclosure, Policy [Policy Text Block] Commercial real estate Loans Receivable, Gross, Commercial, Real Estate Loans: Loans Receivable, Net [Abstract] Loans, net Loans, net Loans Receivable, Fair Value Disclosure Loss Contingencies [Table] Damages sought Loss Contingency, Damages Sought, Value Contingencies Loss Contingencies [Line Items] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Investment Securities Marketable Securities, Policy [Policy Text Block] Marketing expense Marketing Expense Maximum Maximum [Member] Minimum Minimum [Member] Agency mortgage-backed securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Non-performing Nonperforming Financing Receivable [Member] Financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net decrease in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations Net income available to common stockholders Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash used in investing activities Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash provided by financing activities Investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net cash provided by (used in) operating activities Net income Net income Net Income (Loss) Attributable to Parent Recent Accounting Pronouncements Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Total noninterest expense Noninterest Expense Other noninterest income Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Other noninterest income (expense) Other noninterest income Noninterest Income, Other Noninterest income: Noninterest Income [Abstract] Noninterest expense: Noninterest Expense [Abstract] Non-voting common stock Non-voting Common Stock Nonvoting Common Stock [Member] Loan by risk rating Financing Receivable, Net Number of offices Number of Stores Occupancy and equipment expense Occupancy, Net 2019 and thereafter Operating Leases, Future Minimum Payments, Due Thereafter Future minimum lease payments over the remaining terms of leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2017 Operating Leases, Future Minimum Payments, Due in Four Years 2018 Operating Leases, Future Minimum Payments, Due in Five Years 2016 Operating Leases, Future Minimum Payments, Due in Three Years 2014 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2015 Operating Leases, Future Minimum Payments, Due in Two Years Total Operating Leases, Future Minimum Payments Due Basis of Presentation Total other comprehensive income (loss), After-tax Amount Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Total derivatives and hedging activities, After-tax Amount Unrealized loss on purchased interest rate caps and swap, net Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Total derivatives and hedging activities, Pre-tax Amount Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Total other comprehensive loss, Pre-tax Amount Other Comprehensive Income (Loss), before Tax Total available-for-sale securities, Tax Expense (Benefit) Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Income tax (benefit) expense related to other comprehensive (loss) income Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Reclassification adjustment for net gains included in net income, Pre-tax Amount Reclassification adjustments for net gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Total available-for-sale securities, After-tax Amount Unrealized gain (loss) on available-for-sale securities, net Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Reclassification adjustment for net gains included in net income, Tax Expense (Benefit) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Reclassification adjustment for net gains included in net income, After-tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Reclassification adjustment for net gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification adjustment for net gains included in net income, Pre-tax Amount Other-than-temporary impairment losses on securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities Total available-for-sale securities, Pre-tax Amount Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax Allowance for possible losses on commitments and unfunded loans Other Commitment Unrealized (losses) gains on available-for-sale securities, net Total derivatives and hedging activities, Tax Expense (Benefit) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Reclassification adjustment for net gains included in net income, Tax Expense (Benefit) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax Reclassification adjustment for net gains included in net income, After-tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Other borrowings Other Borrowings (Gain) loss on sale or impairment of repossessed collateral, net Other assets Other Assets Total other comprehensive income (loss), Tax Expense (Benefit) Other Comprehensive Income (Loss), Tax Other Intangibles Other Intangible Assets [Member] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in net unrealized gain or loss on available-for-sale securities, After-tax Amount Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Change in accumulated gain or loss on effective cash flow hedges, After-tax Amount Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Change in net unrealized gain or loss on available-for-sale securities, Tax Expense (Benefit) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Change in accumulated loss on effective cash flow hedges, Tax Expense (Benefit) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Change in net unrealized gain or loss on available-for-sale securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Change in net unrealized gain or loss on available-for-sale securities, Pre-tax Amount Change in accumulated loss on effective cash flow hedges Change in accumulated loss on effective cash flow hedges, Pre-tax Amount Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Other interest and dividend income Other income Other Interest and Dividend Income Other noninterest expense Other Other Noninterest Expense Other liabilities Other Liabilities Other assets Other Assets [Member] Other liabilities Other Liabilities [Member] Total available-for-sale securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent Other comprehensive income (loss), before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Total derivatives and hedging activities Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent Derivatives and hedging activities: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent [Abstract] Total other comprehensive (loss) income, before tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Available-for-sale securities: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent [Abstract] Other comprehensive (loss) income, net of tax Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Summary of past due and non-accrual loans Past Due Financing Receivables [Table Text Block] Loans rated 1- 6 Pass [Member] Northeast Bancorp Company Parent Company [Member] Amount of warrants repurchased Payments for Repurchase of Warrants Amount paid to redeem shares of preferred stock Payments for Repurchase of Preferred Stock and Preference Stock Repayment of Federal Home Loan Bank advances Payments for Federal Home Loan Bank Advances Originations of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale (Purchase) redemption of regulatory stock, net Payments for (Proceeds from) Federal Home Loan Bank Stock Dividends paid on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Dividends paid on common stock Payments of Ordinary Dividends, Common Stock Increase in investment of bank subsidiary Payments to Acquire Interest in Subsidiaries and Affiliates Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Dividends paid to stockholders Payments of Ordinary Dividends Loan purchases Payments to Acquire Loans Held-for-investment Stock offering costs Payments of Stock Issuance Costs Originations of loans held for sale Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Plan Name [Domain] Plan Name [Axis] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, liquidation preference per share (in dollars per share) Liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference Per Share Dividends on preferred stock (in shares) Preferred Stock Dividends, Shares Preferred stock, $1.00 par value, 1,000,000 shares authorized; no shares issued and outstanding at March 31, 2014 and June 30, 2013 Preferred Stock, Value, Issued Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock dividends and accretion Preferred Stock Dividends and Other Adjustments Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Preferred Stock Preferred Stock [Member] Reclassifications Reclassification, Policy [Policy Text Block] Proceeds from sale of assets of insurance division Sale proceeds Proceeds from Divestiture of Businesses Repayment of wholesale repurchase agreements Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase Proceeds from Loan and Lease Originations and Principal Collections Loan originations and principal collections, net Proceeds from FHLB advances Proceeds from Federal Home Loan Bank Advances Net increase in short-term borrowings Proceeds from (Repayments of) Short-term Debt Proceeds from Issuance of Preferred Stock and Preference Stock Aggregate proceeds issuance of cumulative perpetual preferred stock Proceeds from maturities and principal payments on available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from life insurance benefits Proceeds from Life Insurance Policies Net proceeds from issuance of common stock Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Net proceeds from sales of loans held for sale Proceeds from Sale of Loans Held-for-sale Proceeds from sales of portfolio loans Proceeds from Sale of Loans Held-for-investment Proceeds from sales of real estate owned and other repossessed collateral Proceeds from Sale of Foreclosed Assets Proceeds from redemption of regulatory stock Proceeds from Sale of Federal Reserve Bank Stock Proceeds from sales of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Professional fees Professional Fees Estimated useful life Property, Plant and Equipment, Useful Life Estimated useful life Gross premises and equipment Property, Plant and Equipment, Gross Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Premises and equipment, net Net premises and equipment Property, Plant and Equipment, Net Premises and Equipment Schedule of premises and equipment Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Axis] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Premises and Equipment Property, Plant and Equipment [Line Items] Provision Provision for loan losses Provision for Loan and Lease Losses Reserve for loan losses Provision for Loan Losses Expensed Range [Axis] Range [Domain] Receivable [Domain] Loans, Allowance for Loan Losses and Credit Quality Reclassification Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Axis] Capital and Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Regulatory stock Repayment of other borrowings Repayments of Other Debt Repayment of capital lease obligation Repayments of Long-term Capital Lease Obligations Residential real estate Residential Real Estate [Member] Residential Real Estate Residential real estate Residential Portfolio Segment [Member] Residential real estate Residential real estate mortgages Residential Residential Mortgage [Member] Restricted stock Restricted Stock [Member] Retained Earnings Retained Earnings [Member] Retained earnings Retained Earnings (Accumulated Deficit) Loans rated 8 Substandard [Member] Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] Exercisable Weighted Average Exercise Price Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price Exercisable Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Expected life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Exercisable Weighted Average Remaining Life Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term Exercise price (in dollar per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price Options outstanding at end of period, Weighted Average Exercise Price Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Exercisable Weighted Average Remaining Life Outstanding Weighted Average Remaining Life Outstanding Weighted Average Remaining Life Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term Schedule of estimated annual amortization expense associated with intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Short-term borrowings Short-term Debt, Fair Value Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Available-for-sale Securities [Table] Schedule of components of other comprehensive income (loss) Comprehensive Income (Loss) [Table Text Block] Summary of restricted stock activity Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block] Estimated Amount and Timing of Future Pre-tax Stock-based Compensation Expense Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of average anti-dilutive options and warrants Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of realized gains and losses on available-for-sale securities Schedule of Realized Gain (Loss) [Table Text Block] Schedule of a option-pricing model weighted-average assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of current and deferred components of income tax expense from continuing operations Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Condensed Financial Information Balance Sheet Condensed Balance Sheet [Table Text Block] Schedule of future minimum lease payments over the remaining term of the lease and the outstanding capital lease obligation Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Schedule of reconciliation between the statutory federal income tax rate and the effective tax rate on income from continuing operations Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of significant portions of the deferred tax assets and deferred tax liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of approximate future minimum lease payments over the remaining terms of the Company's leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of number of shares outstanding for basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Values and Location of Derivatives Designated as Hedging Instruments Schedule of Interest Rate Derivatives [Table Text Block] Condensed Financial Information Statements of Income Condensed Income Statement [Table Text Block] Condensed Financial Information Statements of Cash Flow Condensed Cash Flow Statement [Table Text Block] Summary of gross unrealized losses and fair values aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of components of identifiable intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Available-for-sale Securities Securities available-for-sale Schedule of Available-for-sale Securities [Line Items] Summary of the amortized cost, gross unrealized holding gains and losses, and fair value of securities available for sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of components of accumulated other comprehensive loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Summary of Sale Transactions Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Schedule of Company's and Bank's regulatory capital ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of information pertaining to outstanding interest rate caps and swap agreements used to hedge variable rate debt Schedule of Derivative Instruments [Table Text Block] Schedule of Financial Instruments with contract amounts that represent credit risk Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Summary of fixed-rate long term advances from the Federal Home Loan Bank of Boston Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] Schedule of Fair Value, Off-balance Sheet Risks [Table] Summary of wholesale repurchase agreements Schedule of Repurchase Agreements [Table Text Block] Property, Plant and Equipment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Stock by Class [Table] Schedule of composition of the Company's loan portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis] Summary of Junior Subordinated Debentures issued by the Company Schedule of Subordinated Borrowing [Table Text Block] Information about Stock Options Outstanding Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] Wholesale repurchase agreements Carrying Amount Securities Sold under Agreements to Repurchase Securities sold under wholesale repurchase agreements Securities Sold under Agreements to Repurchase [Member] Wholesale repurchase agreements Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Operating Activities [Domain] NGIB Segment, Discontinued Operations Discontinued Operations [Member] Stock Awards Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Restricted stock granted to a senior executive Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Weighted average grant date fair value of restricted stock granted to the senior executive (in dollars per share) Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Forfeited, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Unvested at beginning of period (in shares) Unvested at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Expected volatility, maximum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected volatility, minimum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Number of additional shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Stock-based compensation Share-based Compensation Risk-free interest rate, maximum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Weighted Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Granted, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Shares Restricted stock activity Share-based Compensation Arrangement by Share-based Payment Award Stock-Based Compensation Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Unvested at end of period (in dollars per share) Unvested at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Risk-free interest rate, minimum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Exercised, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options Exercisable, Weighted Average Exercise Price Exercisable Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Dividend yield (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Forfeited, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Options Exercisable Number Options Exercisable, Shares Exercisable, end of year (in shares) Exercisable, beginning of year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Expected volatility (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Number of shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Risk-free interest rate (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Assumptions: Forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options outstanding at end of period, Weighted Average Exercise Price Options outstanding at beginning of year, Weighted Average Exercise Price (in dollars per share) Options outstanding at end of year, Weighted Average Exercise Price (in dollars per share) Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Options Outstanding Number Outstanding at beginning of year, Shares Outstanding at end of year, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Information by exercise price Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Outstanding Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Exercise Price Range [Axis] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Equity Award [Domain] Options Outstanding Number Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Options Exercisable Number Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options Balance (in shares) Balance (in shares) Shares, Issued Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain] Short-term borrowings Short-term Debt Short-Term Borrowings Short-term Debt [Abstract] Weighted average interest rate on short-term borrowings (as a percent) Short-term Debt, Weighted Average Interest Rate Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Loans rated 7 Special Mention [Member] Operating Activities [Axis] Statement [Table] Statement Statement [Line Items] CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY CONSOLIDATED STATEMENTS OF CASH FLOWS Equity Components [Axis] CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME CONSOLIDATED BALANCE SHEETS Class of Stock [Axis] Stock Issued During Period, Shares, Period Increase (Decrease) Value of shares authorized to be purchased Stock Repurchase Program, Authorized Amount Forfeiture of restricted common stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Conversion of non-voting common stock to voting common stock Stock Issued During Period, Value, Conversion of Convertible Securities Issuance of restricted common stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Forfeiture of restricted common stock Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Stock-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Number of shares authorized to be purchased Stock Repurchase Program, Number of Shares Authorized to be Repurchased Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of restricted common stock Stock Issued During Period, Value, Restricted Stock Award, Gross Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Stock options Equity Option [Member] Stock appreciation rights Stock Appreciation Rights (SARs) [Member] Conversion of non-voting common stock to voting common stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Issuance of common stock Stock Issued During Period, Value, New Issues Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity, Period Increase (Decrease) Total stockholders' equity Balance Balance Stockholders' equity Stockholders' Equity Attributable to Parent Stockholders' Equity Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Subordinated debentures Junior Subordinated Debentures Subordinated Debt [Member] Subsequent Events Subsequent Events [Text Block] Subsequent Events Subsequent Event [Table] Subsequent events Subsequent Event [Line Items] Subsequent events Subsequent Event [Member] Subsequent Event Type [Domain] Subsequent Event Type [Axis] Bank Subsidiaries [Member] Supplemental schedule of cash flow information: Supplemental Cash Flow Information [Abstract] Maximum charge-off period Threshold Period Past Due for Write-off of Financing Receivable Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Ratio (as a percent) Tier One Leverage Capital Required to be Well Capitalized to Average Assets Actual Ratio (as a percent) Tier One Leverage Capital to Average Assets Actual Amount Tier One Risk Based Capital Actual Amount Tier One Leverage Capital Actual Ratio (as a percent) Tier One Risk Based Capital to Risk Weighted Assets Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Ratio (as a percent) Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Minimum Capital Requirements Amount Tier One Leverage Capital Required for Capital Adequacy Minimum Capital Requirements Amount Tier One Risk Based Capital Required for Capital Adequacy Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Amount Tier One Leverage Capital Required to be Well Capitalized Minimum Capital Requirements Ratio (as a percent) Tier 1 leverage ratio (as a percent) Tier One Leverage Capital Required for Capital Adequacy to Average Assets Minimum Capital Requirements Ratio (as a percent) Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Minimum To Be Well Capitalized Under Prompt Correction Action Provisions Amount Tier One Risk Based Capital Required to be Well Capitalized 2018 Time Deposit Maturities, Year Five Time Time Deposits Scheduled maturities of time certificates Time Deposits, Fiscal Year Maturity [Abstract] 2016 Time Deposit Maturities, Year Three Thereafter Time Deposit Maturities, after Year Five Time certificates of less than $100 Time Deposits, Less than $100,000 2015 Time Deposit Maturities, Year Two 2014 Time Deposit Maturities, Next Twelve Months 2017 Time Deposit Maturities, Year Four Transfers from real estate owned and other repossessed collateral to loans Real Estate Owned, Transfer from Real Estate Owned Transfers from premises and equipment to real estate owned and other repossessed collateral Real Estate Owned, Transfer to Real Estate Owned Financial Instruments [Domain] Transfer of Financial Assets Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Schedule of company's post modification balance of TDRs by type of modification Troubled Debt Restructurings on Financing Receivables [Table Text Block] Trust preferred securities Trust Preferred Securities Subject to Mandatory Redemption [Member] Loans rated 10 Unlikely to be Collected Financing Receivable [Member] Unallocated Financing Receivables [Member] Unallocated Unallocated Financing Receivables Gross Unrealized Gains and Unrealized Losses on Available-for-Sale Securities Unrealized Gain (Loss) on Investments [Table Text Block] Unrealized Loss Unrealized Gain (Loss) on Derivatives Unused lines of credit Unused lines of Credit [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] U.S. Government agency securities US Government Agencies Debt Securities [Member] Vesting [Axis] Vesting [Domain] Valuation Technique [Axis] Valuation Technique [Domain] Warrants to Purchase Common Stock Warrants Warrant [Member] Warrants to purchase common stock Warrants and Rights Outstanding Weighted average Weighted Average [Member] Incremental shares from assumed exercise of dilutive securities Weighted Average Number Diluted Shares Outstanding Adjustment Basic (in shares) Weighted average shares used in calculation of basic EPS Weighted Average Number of Shares Outstanding, Basic Weighted average shares used in calculation of diluted EPS Weighted Average Number of Shares Outstanding, Basic and Diluted Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted