Credit Loss [Abstract] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial Commercial Portfolio Segment [Member] Commercial real estate Commercial Real Estate Portfolio Segment [Member] Commercial and industrial loans Commercial And Industrial Loans Portfolio Segment [Member] Commercial And Industrial Loans Portfolio Segment [Member] Residential mortgages Residential Portfolio Segment [Member] Consumer loans Consumer Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Other commercial real estate Other Receivable [Member] Class of financing receivables related to other financing receivables. Construction Construction Loans [Member] Commercial multifamily Commercial Multifamily [Member] Commercial Multifamily [Member] Commercial real estate owner occupied Real Estate Owner Occupied [Member] Real Estate Owner Occupied [Member] Commercial real estate non-owner occupied Real Estate Non-Owner Occupied [Member] Real Estate Non-Owner Occupied [Member] Commercial and industrial - other Commercial And Industrial, Other [Member] Commercial And Industrial, Other Real Estate Real Estate Loan [Member] Home equity Home Equity Loan [Member] Consumer other Consumer, Other [Member] Consumer, Other [Member] 1 to 4 Family 1 to 4 Family [Member] Class of financing receivables related to 1 to 4 Family financing receivables. Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Trouble Debt Restructuring on Financing Receivables [Roll Forward] Trouble Debt Restructuring on Financing Receivables [Roll Forward] Trouble Debt Restructuring on Financing Receivables [Roll Forward] Balance at beginning of the period Financing Receivable, Troubled Debt Restructuring Principal payments Financing Receivable Troubled Debt Restructuring Principal Payments Represents the amount of principal payment of financing receivables modified by troubled debt restructurings. TDR Status change Financing Receivable Troubled Debt Restructuring Status Change Represents the amount of troubled debt restructurings status change in which troubled debt restructuring loans with a specified interest rate equal to or greater than the rate that the entity was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement. Other reductions Financing Receivable Troubled Debt Restructuring Other Increase (Decrease) Financing Receivable Troubled Debt Restructuring Other Increase (Decrease) Newly identified TDRs Financing Receivable Troubled Debt Restructuring Additions Represents the amount of additions of financing receivables which were newly identified as troubled debt restructurings. Balance at end of the period Deposits [Abstract] Time less than $100,000 Time Deposits, Less than $100,000 Time $100,000 through $250,000 Time Deposits, $100,000 Through $250,000 Time Deposits, $100,000 Through $250,000 Time more than $250,000 Time Deposits, $250,000 or More Time Deposits, $250,000 or More Total time deposits Time Deposits Brokered time deposits Brokered Time Deposits Represents the amount of time deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities. Reciprocal deposits Reciprocal Money Market Deposits Represents the reciprocal deposits. Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Acquired Loans Loans Acquired From Business Combinations [Member] Represents information pertaining to the loans acquired from business combinations. Business Activities Loans Loans From Business Activities [Member] Represents information pertaining to the loans from business activities. Impaired financing receivable, with no related allowance, average recorded investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired financing receivable, with no related allowance, interest income, cash basis method Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method Impaired financing receivable, with related allowance, average recorded investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired financing receivable, with related allowance, interest income, cash basis method Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method Impaired financing receivable, average recorded investment Impaired Financing Receivable, Average Recorded Investment Impaired financing receivable, interest income, cash basis method Impaired Financing Receivable, Interest Income, Cash Basis Method Additional funds committed Impaired Financing Receivable Additional Funds Committed Amount Represents information pertaining to the amount of additional funds committed to be advanced in connection with impaired loans. Number of Modifications Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Troubled Debt Restructuring, Premodification Post-Modification Outstanding Recorded Investment Financing Receivable, Troubled Debt Restructuring, Postmodification Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series B Convertible Preferred Stock Convertible Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Fair Value Debt Securities, Held-to-maturity, Fair Value Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock (in shares) Treasury Stock, Shares Statement of Cash Flows [Abstract] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-13 Accounting Standards Update 2016-13 [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net (loss)/income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net (loss) from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net (loss)/income Net Income (Loss) Attributable to Parent Adjustments to reconcile net (loss)/income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for credit losses Provision for Loan and Lease Losses Net amortization of securities Amortization of Securities Amortization of Securities Change in unamortized net loan costs and premiums Change in Unamortized Net Loan Costs and Premiums This element represent as Change In Unamortized Net Loan Costs And Premiums. Premises and equipment depreciation and amortization expense Other Depreciation and Amortization Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Accretion of purchase accounting entries, net Accretion of Purchase Accounting Entries Accretion of Purchase Accounting Entries Amortization of other intangibles Amortization Income from cash surrender value of bank-owned life insurance policies Bank Owned Life Insurance Income Securities losses (gains), net Marketable Securities, Realized Gain (Loss) Net increase (decrease) in loans held-for-sale Increase (Decrease) in Loans Held-for-sale Decrease in right-of-use lease assets Increase (Decrease) In Lease, Right-Of-Use Assets Increase (Decrease) In Lease, Right-Of-Use Assets Decrease in lease liabilities Increase (Decrease) In Lease, Liabilities Increase (Decrease) In Lease, Liabilities Loss on disposition of assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Amortization of interest in tax-advantaged projects Amortization of Tax Credits Represent the information pertaining to amortization of tax credits Net change in other Other Noncash Income (Expense) Net cash provided by operating activities of continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided (used) by operating activities of discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided (used) by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net decrease in trading security Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Purchases of marketable equity securities Payments to Acquire Marketable Securities Proceeds from sales of marketable equity securities Proceeds from Sale and Maturity of Marketable Securities Purchases of securities available for sale Payments to Acquire Debt Securities, Available-for-sale Proceeds from sales of securities available for sale Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from maturities, calls, and prepayments of securities available for sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases of securities held to maturity Payments to Acquire Held-to-maturity Securities Proceeds from maturities, calls, and prepayments of securities held to maturity Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Net change in loans Proceeds from Loan and Lease Originations and Principal Collections Proceeds from surrender of bank-owned life insurance Proceeds from Life Insurance Policy Purchase of Federal Home Loan Bank stock Payments to Acquire Federal Reserve Bank Stock Proceeds from sale of Federal Home Loan Bank stock Proceeds from Sale of Federal Reserve Bank Stock Net investment in limited partnership tax credits Payments for (Proceeds from) Other Investing Activities Purchase of premises and equipment, net Payments to Acquire Property, Plant, and Equipment Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net (decrease)/increase in deposits Increase (Decrease) in Deposits Proceeds from Federal Home Loan Bank advances and other borrowings Proceeds from Issuance of Long-term Debt Repayments of Federal Home Loan Bank advances and other borrowings Repayments of Long-term Debt Purchase of treasury stock Payments for Repurchase of Common Stock Exercise of stock options Proceeds from Stock Options Exercised Common and preferred stock cash dividends paid Payments of Ordinary Dividends, Common Stock Settlement of derivative contracts with financial institution counterparties Settlement of Derivative Contracts with Institutional Counterparties Settlement of Derivative Contracts with Institutional Counterparties Net cash used by financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash and cash equivalents at end of period Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Interest paid on deposits Interest Paid on Deposits This element represent as Interest Paid On Deposits. Interest paid on borrowed funds Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes paid, net Income Taxes Paid, Net Other non-cash changes: Other Noncash Investing and Financing Items [Abstract] Other net comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Impact to retained earnings from adoption of ASC 326, net of tax Cumulative Effect of New Accounting Principle in Period of Adoption Reclass of SBA loan portfolio to held-for-investment, net Transfer of Portfolio Loans and Leases to Held-for-sale Real estate owned acquired in settlement of loans Real Estate Owned Acquired in Settlement of Loans Represents the value of real estate acquired in settlement of loans through non cash transactions. Stockholders' Equity Note [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Realized gains on AFS securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Amount Reclassified From Accumulated Other Comprehensive Income (loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Amounts reclassified out of each component of accumulated other comprehensive income Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Non-interest income Noninterest Income Tax expense Income Tax Expense (Benefit) (Loss)/income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Share-based Payment Arrangement [Abstract] STOCK-BASED COMPENSATION PLANS Share-based Payment Arrangement [Text Block] Statement of Stockholders' Equity [Abstract] Preferred stock Preferred Stock [Member] Common stock Common Stock [Member] Additional paid-in capital Additional Paid-in Capital [Member] Unearned compensation Deferred Compensation, Share-based Payments [Member] Retained earnings Retained Earnings [Member] Accumulated other comprehensive income/(loss) AOCI Attributable to Parent [Member] Treasury stock Treasury Stock [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance at beginning of period (in shares) Shares, Outstanding Balance at beginning of period Stockholders' Equity Attributable to Parent Comprehensive income: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Net income Other comprehensive income (loss) Total comprehensive (loss)/income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Conversion of preferred stock to common stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of preferred stock to common stock Stock Issued During Period, Value, Conversion of Convertible Securities Cash dividends declared on common shares Dividends, Common Stock, Cash Cash dividends declared on preferred shares Dividends, Preferred Stock, Cash Treasury shares repurchased (in shares) Treasury Stock, Shares, Acquired Treasury shares repurchased Treasury Stock, Value, Acquired, Cost Method Forfeited shares (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Forfeited shares Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Restricted stock grants (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock grants Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Other, net (in shares) Stockholders' Equity, Other Shares Other, net Stockholders' Equity, Other Balance at end of period (in shares) Balance at end of period Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] 30-59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] 60-89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] 90 Days or Greater Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Auto And Other Receivable Auto And Other Receivable [Member] Class of financing receivables related to auto and other financing receivables. Total Past Due Financing Receivable, Past Due Current Financing Receivable, Not Past Due Total loans Financing Receivable, before Allowance for Credit Loss Past Due 90 days and Accruing Financing Receivable, 90 Days or More Past Due, Still Accruing Non-accrual loans Financing Receivable, Nonaccrual Nonaccrual With No Related Allowance Financing Receivable, Nonaccrual, No Allowance Interest Income Recognized on Nonaccrual Financing Receivable, Nonaccrual, Interest Income Financing receivable, nonaccrual, medallion loans, fair value Financing Receivable, Nonaccrual, Medallion Loans, Fair Value Financing Receivable, Nonaccrual, Medallion Loans, Fair Value Financing receivable, nonaccrual, medallion loans, contractual balance Financing Receivable, Nonaccrual, Medallion Loans, Contractual Balance Financing Receivable, Nonaccrual, Medallion Loans, Contractual Balance Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Consumer 1-4 Family Impaired loans Financing Receivable, Impaired [Line Items] Recorded Investment Impaired Financing Receivable, Recorded Investment [Abstract] With no related allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment With an allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Impaired Financing Receivable, Recorded Investment Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance [Abstract] With no related allowance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance With an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total Impaired Financing Receivable, Unpaid Principal Balance Related Allowance Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] With an allowance recorded Impaired Financing Receivable, Related Allowance Unamortized net loan origination costs Unamortized Loan Origination Fees Represents the amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases. Unamortized net premium on purchased loans Unamortized Discounts or Premiums Represents the amount of premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Total unamortized net costs and premiums Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums CAPITAL RATIOS AND SHAREHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Unvested stock award shares Restricted Stock [Member] Stock options Share-based Payment Arrangement, Option [Member] Anti-dilutive securities Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Securities excluded from the earnings per share calculations (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Discontinued Operations and Disposal Groups [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] First Choice Loan Services, Inc. First Choice Loan Services, Inc. [Member] First Choice Loan Services, Inc. [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations, Held-for-sale Discontinued Operations, Held-for-sale [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Interest income Disposal Group, Including Discontinued Operation, Interest Income Interest expense Disposal Group, Including Discontinued Operation, Interest Expense Net interest income Disposal Group, Including Discontinued Operation, Interest Income, Net Disposal Group, Including Discontinued Operation, Interest Income, Net Non-interest income Disposal Group, Including Discontinued Operation, Other Income Total net revenue Disposal Group, Including Discontinued Operation, Revenue Non-interest expense Disposal Group, Including Discontinued Operation, Other Expense (Loss) from discontinued operations before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Income tax expense Discontinued Operation, Tax Effect of Discontinued Operation Net (loss) from discontinued operations Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Performing Financial Instruments [Member] Nonperforming Nonperforming Financial Instruments [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] 2020 Financing Receivable, Originated in Current Fiscal Year 2019 Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 2018 Financing Receivable, Originated Two Years before Latest Fiscal Year 2017 Financing Receivable, Originated Three Years before Latest Fiscal Year 2016 Financing Receivable, Originated Four Years before Latest Fiscal Year Prior Financing Receivable, Originated Five or More Years before Latest Fiscal Year Revolving Loans Amortized Cost Basis Financing Receivable, Revolving Revolving Loans Converted to Term Financing Receivable Revolving Converted to Term Loan Financing Receivable Revolving Converted to Term Loan Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] [Domain] for Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] Cumulative Effect, Period of Adoption, Adjusted Balance Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Total loans Total allowance Financing Receivable, Allowance for Credit Loss Investments, Debt and Equity Securities [Abstract] Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Municipal bonds and obligations US States and Political Subdivisions Debt Securities [Member] Tax advantaged economic development bonds Tax Advantaged Economic Development Bonds [Member] Represents the information pertaining to the tax advantaged economic development bonds. Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Balance at beginning of period Debt Securities, Held-to-maturity, Allowance for Credit Loss Provision for credit losses- reversal Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) Balance at end of period Investment Holdings [Table] Investment Holdings [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Agency collateralized mortgage obligations Collateralized Mortgage Obligations [Member] Mortgage-backed securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Corporate bonds Corporate Bond Securities [Member] Other bonds and obligations Other Debt Obligations [Member] Trust preferred securities Trust Preferred Securities Subject to Mandatory Redemption [Member] Investment Holdings [Line Items] Investment Holdings [Line Items] Purchases of securities available for sale Proceeds from sale of available-for-sale securities Debt securities, available-for-sale, realized gain Debt Securities, Available-for-sale, Realized Gain Debt securities, available-for-sale, realized loss Debt Securities, Available-for-sale, Realized Loss Available-for-sale, securities in unrealized loss positions Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Available for sale securities portfolio, number of securities Debt Securities. Available-for-sale, Number of Positions Represents the number of securities in the entity's portfolio of available-for-sale securities. Available for sale securities, continuous unrealized loss position, aggregate losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Qualitative Disclosure, Aggregate Losses Percentage Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Qualitative Disclosure, Aggregate Losses Percentage Held-to-maturity, securities in unrealized loss positions Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Held-to-maturity securities portfolio, number of securities Held-to-maturity, Securities Portfolio Number of Securities Held-to-maturity, Securities Portfolio Number of Securities Held to maturity securities, continuous unrealized loss position, aggregate losses Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Qualitative Disclosure, Aggregate Losses Percentage Represents the aggregate unrealized losses, expressed as a percentage of the amortized cost of the securities in a continuous unrealized loss position categorized as held-to-maturity and available-for-sales securities. Banking and Thrift, Interest [Abstract] NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES Interest Income and Interest Expense Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Non-recurring Fair Value, Nonrecurring [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 3 Fair Value, Inputs, Level 3 [Member] Quantitative information about the significant unobservable inputs within Level 3 Fair Value Measurement Inputs and Valuation Techniques [Line Items] Individually evaluated loans Impaired Loans, Fair Value Disclosure Represents the amount of impaired loans assets reported on the balance sheet at period end measured at fair value by the entity. Capitalized servicing rights Servicing Asset at Fair Value, Amount Other real estate owned Real Estate Acquired Through Foreclosure Total Assets, Fair Value Disclosure Agency collateralized mortgage obligations Collateralized Debt Obligations [Member] Agency mortgage-backed securities Residential Mortgage Backed Securities [Member] Agency commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Securities available for sale Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Securities available for sale, at fair value Debt Securities, Available-for-sale Allowance Debt Securities, Available-for-sale, Allowance for Credit Loss Securities held to maturity Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Amortized Cost Debt Securities, Held-to-maturity Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Allowance Marketable equity securities, amortized cost Equity Securities, FV-NI, Cost Marketable equity securities, gross unrealized gains Equity Securities, FV-NI, Unrealized Gain Marketable equity securities, gross unrealized losses Equity Securities, FV-NI, Unrealized Loss Marketable equity securities, fair value Equity Securities, FV-NI Total, amortized cost basis Debt Securities, Available-for-sale and Held-to-maturity, and Equity Securities, FV-NI, Amortized Cost Represents the cost of debt and equity securities, which are categorized as held-to-maturity and available-for-sale, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Total, gross unrealized gain Debt Securities, Available-for-sale and Held-to-maturity, and Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax Represents the gross unrealized gains for securities, at a point in time, which are categorized as held-to-maturity and available-for-sale securities. Total, gross unrealized loss Debt Securities, Available-for-sale and Held-to-maturity, and Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax Represents the gross unrealized losses for securities, at a point in time, which are categorized as held-to-maturity and available-for-sale securities. Total, fair value Debt Securities, Available-for-sale and Held-to-maturity, and Equity Securities, FV-NI Debt Securities, Available-for-sale and Held-to-maturity, and Equity Securities, FV-NI Total, Allowance Debt Securities, Available-for-sale And Held-to-maturity, Allowance For Credit Losses Debt Securities, Available-for-sale And Held-to-maturity, Allowance For Credit Losses Assets Disposal Group, Including Discontinued Operation, Assets [Abstract] Loans held for sale, at fair value Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Premises and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment Mortgage servicing rights, at fair value Disposal Group, Including Discontinued Operation, Mortgage Servicing Rights At Fair Value Disposal Group, Including Discontinued Operation, Mortgage Servicing Rights At Fair Value Mortgage banking derivatives Disposal Group, Including Discontinued Operation, Mortgage Banking Derivatives Disposal Group, Including Discontinued Operation, Mortgage Banking Derivatives Right-of-use asset Disposal Group, Including Discontinued Operation, Operating Lease, Right-of-Use Asset Disposal Group, Including Discontinued Operation, Operating Lease, Right-of-Use Asset Other assets Disposal Group, Including Discontinued Operation, Other Assets Total assets Disposal Group, Including Discontinued Operation, Assets Liabilities Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Customer payments in process Disposal Group, Including Discontinued Operation, Customer Payments In Process Disposal Group, Including Discontinued Operation, Customer Payments In Process Lease liability Disposal Group, Including Discontinued Operation, Lease, Liability Disposal Group, Including Discontinued Operation, Lease, Liability Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities Total liabilities Disposal Group, Including Discontinued Operation, Liabilities Organization, Consolidation and Presentation of Financial Statements [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] PCD gross up Financing Receivable, Before Allowance For Credit Losses, Purchased Credit Deterioration Gross Up Financing Receivable, Before Allowance For Credit Losses, Purchased Credit Deterioration Gross Up Fair value option Financing Receivable, Before Allowance For Credit Losses, Fair Value Option Financing Receivable, Before Allowance For Credit Losses, Fair Value Option Less: Allowance for credit losses on loans Allowance for credit losses on securities Deferred tax assets, net Deferred Tax Assets, Gross Other liabilities (ACL unfunded loan commitments) Off-Balance Sheet, Credit Loss, Liability Retained earnings Retained Earnings (Accumulated Deficit) Taxi Medallion Portfolio Segment Taxi Medallion Portfolio Segment [Member] Taxi Medallion Portfolio Segment [Member] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] Financial Asset Acquired with Credit Deterioration Financial Asset Acquired with Credit Deterioration [Member] Unfunded loan commitments Allowance for credit loss, confirmed losses Financing Receivable, Allowance For Credit Loss, Confirmed Losses Financing Receivable, Allowance For Credit Loss, Confirmed Losses Noncredit discount, amount Financing Receivable, Noncredit Discount Financing Receivable, Noncredit Discount Debt Disclosure [Abstract] BORROWED FUNDS Debt Disclosure [Text Block] Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt securities, available for sale securities, less than twelve months, gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt securities, available for sale securities, over twelve months, gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract] Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Debt securities, available for sale securities, continuous unrealized loss position, fair value Debt Securities, Available-for-sale, Unrealized Loss Position Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Held to maturity securities, accumulated unrecognized holding loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Held to maturity securities, accumulated unrecognized holding loss, fair value Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Securities available for sale and held to maturity Debt Securitives, Held To Maturity Securities and Available For Sale Securities, Continuous Unrealized Loss Position [Abstract] Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, aggregate losses Debt Securities, Available-for-sale and Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position for less than twelve months for those securities that are categorized as held-to-maturity and available-for-sale. Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, fair value Debt Securities, Available-for-sale and Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months Represents the aggregate fair value of investments in debt and equity securities categorized as held-to-maturity and available-for-sale that have been in a continuous unrealized loss position for less than twelve months. Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, aggregate losses Debt Securities, Available-for-sale and Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position for twelve months or longer for those securities that are categorized as held-to-maturity and available-for-sale. Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, fair value Debt Securities, Available-for-sale and Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer Represents the aggregate fair value of investments in debt and equity securities categorized as held-to-maturity and available-for-sale that have been in a continuous unrealized loss position for twelve months or longer. Held to maturity and available for sale securities continuous unrealized loss position, aggregate losses Debt Securities, Available-for-sale and Held-to-maturity, Unrealized Loss Position, Accumulated Loss Represents the excess of amortized cost basis over the fair value of securities that have been in a loss position, which are categorized as held-to-maturity and available-for-sale. Held to maturity and available for sale securities continuous unrealized loss position, fair value Debt Securities, Available-for-sale and Held-to-maturity, Unrealized Loss Position Represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized as held-to-maturity and available-for-sale securities. Leases [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Operating Activities [Domain] Discontinued Operations Discontinued Operations [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total undiscounted lease payments Lessee, Operating Lease, Liability, Payments, Due Less amounts representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lease liability Operating Lease, Liability Finance Leases Finance Lease, Liability, Payment, Due [Abstract] 2020 Finance Lease, Liability, Payments, Remainder of Fiscal Year 2021 Finance Lease, Liability, Payments, Due Year Two 2022 Finance Lease, Liability, Payments, Due Year Three 2023 Finance Lease, Liability, Payments, Due Year Four 2024 Finance Lease, Liability, Payments, Due Year Five Thereafter Finance Lease, Liability, Payments, Due after Year Five Total undiscounted lease payments Finance Lease, Liability, Payment, Due Less amounts representing interest Finance Lease, Liability, Undiscounted Excess Amount Lease liability Finance Lease, Liability SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] BASIS OF PRESENTATION Business Description and Basis of Presentation [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated other comprehensive income Net unrealized holding gain on AFS securities Net unrealized holding (loss) on pension plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Other accumulated comprehensive income (loss), before tax AOCI before Tax, Attributable to Parent Income taxes related to items of accumulated other comprehensive income AOCI Tax, Attributable to Parent Total shareholders’ equity Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swaps Interest Rate Swap [Member] Reverse interest rate swaps Reverse Interest Rate Swaps [Member] Represents information pertaining to the reverse interest rate swaps which can be used to synthetically convert fixed rate debt to floating. Risk participation agreements Risk Participation Agreements [Member] Represents the information pertaining to risk participation agreements with dealer banks. Forward commitments Forward Commitments [Member] Represents the forward commitments that are free-standing derivatives which are carried at fair value with changes recorded in the mortgage banking component of noninterest income in the entity's consolidated statements of income. Commitments to lend Commitments to Extend Credit [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Economic hedges Economic Hedging [Member] Represents information pertaining to derivatives that are not designated as accounting hedges but are being used as economic hedges. Non-hedging derivatives Nonhedging [Member] Represents information pertaining to derivatives that are not used for hedging purposes and thus are not designated as accounting hedges. Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Industrial revenue bond Industrial Revenue Bond [Member] Represents information pertaining to the industrial revenue bond, a financing instrument issued by designated local industrial development boards (IDB's) or other issuers authorized by state law. Loans with commercial loan customers Commercial Paper [Member] Derivative [Line Items] Derivative [Line Items] Unrealized gain/(loss) recognized in other non-interest income Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments (Unfavorable) change in credit valuation adjustment recognized in other non-interest income Derivative Instruments Favorable Changes in Credit Valuation Adjustment Recognized in Other Non Interest Income The favorable changes in credit valuation adjustments on derivative instruments that were recognized in other non-interest income during the current period. Realized (loss) in discontinued operations Gain (Loss) on Sale of Derivatives Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Lease Right-of-Use Assets Assets, Lessee [Abstract] Assets, Lessee [Abstract] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Finance lease right-of-use assets Finance Lease, Right-of-Use Asset Total Lease Right-of-Use Assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset Lease Liabilities Liabilities, Lessee [Abstract] Liabilities, Lessee [Abstract] Operating lease liabilities Finance lease liabilities Total Lease Liabilities Lease, Liability Lease, Liability Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Balance at Beginning of Period Charged-off loans Allowance for Loan and Lease Losses, Write-offs Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Provision for Credit Losses Financing Receivable, Credit Loss, Expense (Reversal) Balance at End of Period Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] TRADING SECURITY Disclosure of Trading Securities and Certain Trading Assets [Text Block] The entire disclosure for trading securities. Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss) before Reclassifications [Abstract] Before Tax OCI, before Reclassifications, before Tax, Attributable to Parent Tax Effect Other Comprehensive Income (Loss) before Reclassifications, Tax Net of Tax OCI, before Reclassifications, Net of Tax, Attributable to Parent Less: reclassification adjustment for gains realized in net income Reclassification from Accumulated Other Comprehensive Income Current Period [Abstract] Before Tax Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Tax Effect Reclassification from AOCI, Current Period, Tax Net of Tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Before Tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Tax Effect Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Total other comprehensive income Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Non-Vested Stock Awards Outstanding Stock Options Outstanding Stock-based compensation plans Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Non-vested Stock Awards Outstanding, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Balance at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Stock awards vested (in shares) Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Balance at the end of the period (in shares) Non-vested Stock Awards Outstanding, 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] Balance at the beginning of the 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 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 Stock awards 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 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 Balance at the end of the period (in dollars per share) Stock Options Outstanding, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Balance at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Acquired (in shares) Share-based Compensation Arrangement By Share-based Payment Award, Options, Acquired In Period Share-based Compensation Arrangement By Share-based Payment Award, Options, Acquired In Period Stock options exercised (in shares) Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Balance at the end of the period (in shares) Exercisable options at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Stock Options Outstanding, Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Balance at the beginning of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Acquired (in dollars per share) Share-based Compensation Arrangements By Share-based Payment Award, Options, Acquired In Period, Weighted Average Exercise Price Share-based Compensation Arrangements By Share-based Payment Award, Options, Acquired In Period, Weighted Average Exercise Price Stock options exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Balance at the end of the period (in dollars per share) Exercisable options at the end of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Bank Subsidiaries [Member] Tier 1 capital to risk-weighted assets Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Total capital to risk weighted assets Capital to Risk Weighted Assets Common equity tier 1 capital to risk weighted assets Common Equity Tier One Risk Based Capital to Risk Weighted Assets Common equity Tier 1 capital divided by risk weighted assets as defined by regulations. Tier 1 capital to risk weighted assets Tier One Risk Based Capital to Risk Weighted Assets Tier 1 capital to average assets Tier One Leverage Capital to Average Assets Regulatory minimum to be well capitalized, Total capital to risk weighted assets Capital Required to be Well Capitalized to Risk Weighted Assets Regulatory minimum to be well capitalized, Common equity tier 1 capital to risk weighted assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets The Common equity Tier 1 capital ratio (Common equity Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. Regulatory minimum to be well capitalized, Tier 1 capital to risk weighted assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Regulatory minimum to be well capitalized, Tier 1 capital to average assets Tier One Leverage Capital Required to be Well Capitalized to Average Assets Statement of Comprehensive Income [Abstract] Net (loss)/income Other comprehensive income, before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Changes in unrealized gain on debt securities available-for-sale Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Income taxes related to other comprehensive income: Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract] Changes in unrealized gain on debt securities available-for-sale Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Net loans Financing Receivable, after Allowance for Credit Loss Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Advances from the FHLB Federal Home Loan Bank Certificates and Obligations (FHLB) [Member] Subordinated borrowings Private Placement Subordinated Notes [Member] Represents information pertaining to the private placement fixed and floating rate junior subordinated notes. Junior subordinated borrowing - Trust I Berkshire Hills Capital Trust I [Member] Represents information pertaining to Berkshire Hills Capital Trust I. Junior subordinated borrowing - Trust II SI Capital Trust II [Member] SI Capital Trust II [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Principal, Short-term borrowings Short-term Debt Principal, Long-term borrowings Long-term Debt Total borrowings Debt and Lease Obligation Weighted average rate on short-term borrowings Short-term Debt, Weighted Average Interest Rate, at Point in Time Weighted average rate on long-term borrowings Long-term Debt, Weighted Average Interest Rate, at Point in Time Weighted average rate Debt, Weighted Average Interest Rate Summary of Activity in the Stock Award and Stock Option Plans Share-based Payment Arrangement, Activity [Table Text Block] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Other comprehensive income (loss) before reclassifications Less: amounts reclassified from accumulated other comprehensive income (loss) Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Operating And Financing Activities, Lessee [Abstract] Cash Flow, Operating And Financing Activities, Lessee [Abstract] Operating cash flows from operating leases Operating Lease, Payments Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Financing cash flows from finance leases Finance Lease, Principal Payments Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Continuing Operations Continuing Operations [Member] Loans Held for Investment Loans Held for Investment [Member] Loans Held for Investment [Member] Loans Held for Sale Loans Held For Sale [Member] Represents the details pertaining to loans held for sale. Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Number of trading securities in the portfolio Investment Portfolio Number of Securities Represents the number of securities in the entity's security portfolio. Gains (losses) in fair value of loans held for sale included in earnings Fair Value, Option, Changes in Fair Value, Gain (Loss) Payments for origination of mortgage loans held-for-sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sale and collection of loans held-for-sale Proceeds from Sale and Collection of Loans Held-for-sale Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] AFS Securities AFS Securities [Member] AFS Securities [Member] Recurring Fair Value, Recurring [Member] Commitments to lend Capitalized servicing rights Capitalized Mortgage Servicing Rights [Member] Represents the details pertaining to capitalized mortgage servicing rights. Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Indication from Market Maker Valuation, Market Approach [Member] Historical Trend Historical Trend Valuation Technique [Member] Historical trend approach valuation technique used to measure fair value. Pricing Model Pricing Model Valuation Technique [Member] Pricing model approach valuation technique used to measure fair value. Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Discount rate Measurement Input, Discount Rate [Member] Price Measurement Input, Price Indication [Member] Measurement Input, Price Indication [Member] Closing Ratio Measurement Input, Closing Ratio [Member] Measurement Input, Closing Ratio [Member] Origination Costs, per loan Measurement Input, Origination Costs [Member] Measurement Input, Origination Costs [Member] Constant prepayment rate (CPR) Measurement Input, Constant Prepayment Rate [Member] Collateral Value Collateral Value [Member] Collateral Value [Member] Trading security Debt Securities, Trading Loans held for investment Loans Held for Investment Loans Held for Investment Derivative asset Derivative Asset Servicing asset Servicing Asset Total Fair Value, Net Asset (Liability) Trading security, significant unobservable input value Debt Securities, Trading, Measurement Input Loan held for investment, measurement input Loans Held for Investment, Measurement Input Loans Held for Investment, Measurement Input Debt securities, available-for-sale, measurement input Debt Securities, Available-for-sale, Measurement Input Derivative asset, significant unobservable input value Derivative Asset, Measurement Input Servicing asset, significant unobservable input value Servicing Asset, Measurement Input Schedule of ROU Assets and Lease Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Supplemental Information Related to Leases Supplemental Information Related to Leases [Table Text Block] Supplemental Information Related to Leases [Table Text Block] Summary of Supplemental Cash Flow Information Related to Leases Lease, Cost [Table Text Block] Schedule of Maturity Analysis of Operating Lease Liability Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of Maturity Analysis of Finance Lease Liability Finance Lease, Liability, Maturity [Table Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Estimated fair values of financial instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Trading security Debt Securities, Trading, and Equity Securities, FV-NI Marketable equity securities Securities available for sale Securities held to maturity FHLB bank stock and restricted securities Federal Home Loan Bank Stock and Other Restricted Securities at Cost This element represent as Federal Home Loan Bank Stock And Other Restricted Securities. Net loans Loans Receivable, Fair Value Disclosure Loans held for sale Loans Held-for-sale, Fair Value Disclosure Accrued interest receivable Interest Receivable Derivative assets Derivative Asset, Fair Value, Gross Asset Financial Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Total deposits Deposits, Fair Value Disclosure Short-term debt Short-term Debt, Fair Value Long-term Federal Home Loan Bank advances Federal Home Loan Bank Borrowings, Fair Value Disclosure Subordinated borrowings Subordinated Debt Obligations, Fair Value Disclosure Derivative liabilities Derivative Liability, Fair Value, Gross Liability EARNINGS PER SHARE Earnings Per Share [Text Block] Financing receivable, before allowance for credit loss Summary of Time Deposits Schedule of Time Deposits [Table Text Block] Tabular disclosure of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts. Schedule of Borrowed Funds Schedule of Debt [Table Text Block] Summary of Maturities of FHLBB Advances Schedule of Maturities and Weighted Average Interest Rates of Federal Home Loan Bank Advances [Table Text Block] Tabular disclosure of the contractual maturities and weighted average interest rates on borrowings or advances from Federal Home Loan Bank. LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Short-term investments Cash Equivalents, at Carrying Value Total cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Trading security, at fair value Marketable equity securities, at fair value Marketable Securities Securities held to maturity (fair values of $358,416 and $373,277) Federal Home Loan Bank stock and other restricted securities Total securities Investments Less: Allowance for credit losses on held to maturity securities Net securities Investments, Net Investments, Net Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group or Discontinued Operation Amount of loans held for sale, including but not limited to, commercial and consumer loans. Excludes loans not part of a disposal group or discontinued operation. Less: Allowance for credit losses on loans Premises and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Other intangible assets Intangible Assets, Net (Excluding Goodwill) Cash surrender value of bank-owned life insurance policies Bank Owned Life Insurance Other assets Other Assets Assets from discontinued operations Total assets Assets Liabilities Liabilities [Abstract] Demand deposits Demand Deposit Accounts NOW and other deposits Deposits, Negotiable Order of Withdrawal (NOW) Money market deposits Deposits, Money Market Deposits Savings deposits Deposits, Savings Deposits Time deposits Total deposits Deposits Short-term debt Long-term Federal Home Loan Bank advances Long-term Federal Home Loan Bank Advances Subordinated borrowings Junior Subordinated Notes Other liabilities Other Liabilities Liabilities from discontinued operations Total liabilities Liabilities Shareholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Preferred Stock (Series B non-voting convertible preferred stock - $0.01 par value; 2,000,000 shares authorized, 260,907 shares issued and outstanding in 2020; 2,000,000 shares authorized, 521,607 shares issued and outstanding in 2019) Preferred Stock, Value, Issued Common stock ($.01 par value; 100,000,000 shares authorized and 51,903,190 shares issued and 50,199,479 shares outstanding in 2020; 51,903,190 shares issued and 49,585,143 shares outstanding in 2019 Common Stock, Value, Issued Additional paid-in capital - common stock Additional Paid in Capital, Common Stock Unearned compensation Deferred Compensation Equity Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost (1,703,711 shares in 2020 and 2,318,047 shares in 2019) Treasury Stock, Value Total liabilities and shareholders’ equity Liabilities and Equity Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock awards vested (in shares) Total compensation cost Share-based Payment Arrangement, Expense Summary of Securities Available for Sale, Held to Maturity, and Marketable Equity Securities Marketable Securities [Table Text Block] Debt Securities, Held-to-maturity, Allowance for Credit Loss Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block] Schedule of Estimated Fair Value of Available for Sale (“AFS”) and Held to Maturity (“HTM”) Securities Segregated by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Securities Available for Sale and Held to Maturity with Unrealized Losses, Segregated by Duration Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Earnings Per Share Basic and Diluted [Table] Schedule of Earnings Per Share Basic and Diluted [Table] Disclosure pertaining to the entity's basic and diluted earnings per share. Earnings per share Earnings Per Share Basic and Diluted [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Income from continuing operations Income from discontinued operations Average number of common shares issued (in shares) Weighted Average Number of Shares Issued, Basic Less: average number of treasury shares (in shares) Weighted Average Number of Shares, Treasury Stock Less: average number of unvested stock award shares (in shares) Weighted Average Number of Shares, Restricted Stock Plus: average participating preferred shares (in shares) Weighted Average Number of Shares Outstanding, Preferred Stock Weighted Average Number of Shares Outstanding, Preferred Stock Average number of basic common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Plus: dilutive effect of share-based payment arrangements (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Average number of diluted common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic (loss)/earnings per common share: Earnings Per Share, Basic [Abstract] Continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Total (in dollars per share) Earnings Per Share, Basic Diluted (loss)/earnings per common share: Earnings Per Share, Diluted [Abstract] Continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Total (in dollars per share) Earnings Per Share, Diluted Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Total economic hedges Risk participation agreements with dealer banks Forward sale commitments Interest rate swap on tax advantaged economic development bond Nontaxable Municipal Bonds [Member] Interest rate swap agreements and non-hedging derivative assets and liabilities Derivative Instrument Detail [Abstract] Notional amount Derivative, Notional Amount Weighted average maturity Derivative, Average Remaining Maturity Weighted average rate, received Derivative, Weighted Average Rate, Received Represents information pertaining to the derivative weighted average rate which is received. Weighted average rate, contract pay rate Derivative, Weighted Average Rate, Paid Represents information pertaining to the derivative weighted average rate which is paid. Estimated fair value asset (liability) Derivative Assets (Liabilities), at Fair Value, Net Impact of settled to market contracts Fair Value Estimates, Impact of Settled to Market Contract Fair Value Estimates, Impact of Settled to Market Contract Schedule of Actual and Required Capital Ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Components of Accumulated Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Components of Other Comprehensive Income Comprehensive Income (Loss) [Table Text Block] Schedule of Gross Changes in Each Component of Accumulated Other Comprehensive Income Schedule of Changes in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Tabular disclosure of the changes in components of accumulated other comprehensive income (loss). Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance at beginning of period Loans and Leases Receivable, Allowance Charged-off loans Recoveries on charged-off loans Allowance for Loan and Lease Loss, Recovery of Bad Debts Provision/(releases) for loan losses Balance at end of period Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Total Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Loans Held for Sale Fair Value, Option, Quantitative Disclosures [Line Items] Aggregate Fair Value Aggregate Unpaid Principal Aggregate fair value less aggregate unpaid principal Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables Fixed rate advances Federal Home Loan Bank Fixed Rate Advances [Member] Fixed rate borrowings from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and also in times of liquidity shortages. Weighted Average Rate Weighted Average [Member] Principal Federal Home Loan Bank, Advances, Rolling Maturity [Abstract]