Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial and industrial Commercial Portfolio Segment [Member] Commercial real estate Commercial Real Estate Portfolio Segment [Member] Residential mortgage Residential Portfolio Segment [Member] Consumer loans Consumer Portfolio Segment [Member] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Commercial real estate Real Estate Loan [Member] Construction Construction Loans [Member] Home equity Home Equity Loan [Member] Automobile Automobile Loan [Member] Other consumer Other Consumer Loan [Member] Other Consumer Loan [Member] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] 30-59 Days Past Due Loans Financing Receivables, 30 to 59 Days Past Due [Member] 60-89 Days Past Due Loans Financing Receivables, 60 to 89 Days Past Due [Member] Accruing Loans 90 Days or More Past Due Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Past Due Loans Financing Receivable, Recorded Investment, Past Due Non-Accrual Loans Financing Receivable, Recorded Investment, Nonaccrual Status Total Past Due Loans Financing Receivable, Recorded Investment, Past Due And Nonaccrual Status Financing Receivable, Recorded Investment, Past Due And Nonaccrual Status Current Non-PCI Loans Financing Receivable Recorded Investment Current Non P C I Loans Financing Receivable Recorded Investment Current Non PCI Loans. Total Non-PCI Loans Past Due Non Accrual And Current Non Pci Loans Past Due Non Accrual And Current Non PCI Loans. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair value hedge Fair Value Hedging [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swaps Interest Rate Swap [Member] Derivative [Line Items] Derivative [Line Items] Carrying Amount of the Hedged Asset Hedged Asset, Fair Value Hedge Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] Non-PCI Loans Non Purchased Credit Impaired Loans [Member] Non Purchased Credit Impaired Loans [Member] PCI Loans Financial Asset Acquired with Credit Deterioration [Member] Consumer Accounts, Notes, Loans and Financing Receivable Accounts, Notes, Loans and Financing Receivable [Line Items] Loans Loans and Leases Receivable, Net of Deferred Income Income Tax Disclosure [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Assets Other Assets [Member] Other Liabilities Accrued Expenses And Other Liabilities [Member] Accrued Expenses And Other Liabilities [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Other Assets: Other Assets [Abstract] Affordable housing tax credit investments, net Amortization Method Qualified Affordable Housing Project Investments Other tax credit investments, net Other Tax Credit Investments, Net Other Tax Credit Investments, Net Total tax credit investments, net Tax Credit Investments, Net Tax Credit Investments, Net Other Liabilities: Other Liabilities [Abstract] Unfunded affordable housing tax credit commitments Qualified Affordable Housing Project Investments, Commitment, Unfunded Tax Credit Qualified Affordable Housing Project Investments, Commitment, Unfunded Tax Credit Unfunded other tax credit commitments Other Unfunded Tax Credit Commitments Other Unfunded Tax Credit Commitments Total unfunded tax credit commitments Unfunded Tax Credit Commitments Unfunded Tax Credit Commitments Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Cover page. Entities [Table] Entities [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock Common Stock [Member] Non-Cumulative Perpetual Preferred Stock, Series A Non-Cumulative Perpetual Preferred Stock, Series A [Member] Non-Cumulative Perpetual Preferred Stock, Series A Non-Cumulative Perpetual Preferred Stock, Series B Non-Cumulative Perpetual Preferred Stock, Series B [Member] Non-Cumulative Perpetual Preferred Stock, Series B Entity Information [Line Items] Entity Information [Line Items] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Document Period End Date Document Period End Date 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 Entity Common Stock, Shares Outstanding Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Period Period Focus Document Fiscal Period Focus Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Fair Value Disclosures [Abstract] Fair Value Measurement of Assets and Liabilities Fair Value Disclosures [Text Block] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Residential real estate properties Residential Mortgage [Member] In formal foreclosure proceedings In Formal Foreclosure Proceedings [Member] In Formal Foreclosure Proceedings [Member] Non-covered loans net of unearned premiums and deferred loan fees Loans and Leases Receivable, Deferred Income Outstanding balances for PCI loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Transfer of loans to loans held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Sales of loans Sales Of Loans Held For Investment Sales Of Loans Held For Investment Impaired loans Impaired Loans Threshold This amount represents the threshold for a commercial loan to meet the definition of a loan. Number of consecutive months for performing restructured loans to be put on accrual status Financing Receivable, Modifications, Period Of Performance To Be Put On Accrual Status Financing Receivable, Modifications, Period Of Performance To Be Put On Accrual Status TDRs not reported as non-accrual loans Troubled Debt Restructurings Not Reported As Non Accrual Loans Troubled debt restructurings performing in accordance with the restructured terms (not reported as non-accrual loans.) Non-performing TDRs Non Performing Troubled Debt Restructuring Loans Non-performing troubled debt restructuring consumer loans due to the most recent OCC guidance. Specific reserves for loan losses Specific Reserves For Loan Losses Specific reserves for loan losses on loans individually evaluated for impairment. Loan charge-offs related to loans modified as TDRs Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Days past due to place on payment default Days Past Due To Place On Non Accrual Status Days Past Due To Place On Non Accrual Status Other real estate owned Other Real Estate, Foreclosed Assets, and Repossessed Assets Residential mortgage and consumer loans secured by residential real estate properties Mortgage Loans in Process of Foreclosure, Amount Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Loan servicing rights Loan Servicing Rights [Member] Loan Servicing Rights [Member] Core deposits Core Deposits [Member] Other Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Intangible Assets Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Valuation Allowance Valuation Allowance for Impairment of Recognized Servicing Assets, Balance Net Intangible Assets Intangible Assets, Net (Excluding Goodwill) 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] U.S. government agency securities US Government Agencies Debt Securities [Member] Obligations of states and state agencies State and Local Jurisdiction [Member] Municipal bonds Municipal Bonds [Member] Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Trust preferred securities Other Debt Obligations [Member] Corporate and other debt securities Corporate Debt Securities [Member] Schedule of Held-to-maturity Securities Schedule of Held-to-maturity Securities [Line Items] Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] Less than Twelve Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value More than Twelve Months, Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Unrealized Losses Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] Less than Twelve Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss More than Twelve Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Earnings Per Share Reconciliation Earnings Per Share Reconciliation [Abstract] Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Basic weighted average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Plus: Common stock equivalents (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per common share: Earnings Per Share, Basic and Diluted [Abstract] Basic (usd per share) Earnings Per Share, Basic Diluted (usd per share) Earnings Per Share, Diluted Anti-dilutive common stock options and warrants (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Offsetting [Abstract] Offsetting Assets Offsetting Assets [Table Text Block] Offsetting Liabilities Offsetting Liabilities [Table Text Block] Allowance for Credit Losses Allowance for Credit Losses [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Preferred Series A Series A Preferred Stock [Member] Preferred Series B Series B Preferred Stock [Member] Common stock Statement [Line Items] Statement [Line Items] Cash dividends declared (usd per share) Preferred Stock, Dividends Per Share, Declared Cash dividends declared (usd per share) Common Stock, Dividends, Per Share, Declared Equity [Abstract] Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification from Each Component of Accumulated Other Comprehensive Loss Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Consolidated Statements of Financial Condition Related to Fair Value of Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] (Losses) Gains Related to Interest Rate Derivatives Designated as Hedges of Cash Flows Derivative Instruments, Gain (Loss) [Table Text Block] Gains (Losses) Related to Interest Rate Derivatives Designated as Hedges of Fair Value Schedule of Interest Rate Derivatives [Table Text Block] Interest Rate Derivatives Designated as Hedges Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Net Gains (Losses) Related to Derivative Instruments Not Designated as Hedging Instruments Schedule Of Gains Losses Income Related To Derivative Instruments Not Designated As Hedging Instruments [Table Text Block] Schedule of gains (losses) income related to derivative instruments not designated as hedging instruments Statement of Cash Flows [Abstract] Investment securities held to maturity Held-to-maturity Securities [Member] Investment securities available for sale Available-for-sale Securities [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Amortization and Accretion, Net Stock-based compensation Share-based Compensation Provision for credit losses Provision for Loan, Lease, and Other Losses Net amortization of premiums and accretion of discounts on securities and borrowings Accretion Amortization Of Discounts And Premiums Investments And Borrowings The sum of the periodic adjustments of the differences between securities'/borrowings' face values and purchase prices that are charged against earnings. This is called accretion if the security/borrowing was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by (used in) operations using the indirect method. Amortization of other intangible assets Amortization of Intangible Assets Losses on securities transactions, net Debt and Equity Securities, Gain (Loss) Proceeds from sales of loans held for sale Proceeds from Sale of Loans Held-for-sale Gains on sales of loans, net Gain (Loss) on Sales of Loans, Net Net impairment losses on securities, recognized in earnings Other than Temporary Impairment Losses, Investments Originations of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale (Gains) losses on sales of assets, net Gain (Loss) on Disposition of Assets for Financial Service Operations Net change in: Increase (Decrease) in Operating Capital [Abstract] Cash surrender value of bank owned life insurance Bank Owned Life Insurance Income Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other assets Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Net cash provided 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 loan originations and purchases Payments to Acquire Loans and Leases Held-for-investment Investment securities held to maturity: Proceeds from Sale, Maturity and Collection of Investments [Abstract] Purchases Payments to Acquire Held-to-maturity Securities Maturities, calls and principal repayments Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Investment securities available for sale: Proceeds from Sale and Maturity of Held-to-maturity Securities [Abstract] Purchases Payments to Acquire Debt Securities, Available-for-sale Sales Proceeds from Sale of Debt Securities, Available-for-sale Maturities, calls and principal repayments Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Death benefit proceeds from bank owned life insurance Proceeds from Life Insurance Policy Proceeds from sales of real estate property and equipment Proceeds from Sale of Property, Plant, and Equipment Purchases of real estate property and equipment Payments to Acquire Property, Plant, and Equipment Cash and cash equivalents acquired in acquisition Cash Acquired from Acquisition Net cash used in 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 change in deposits Increase (Decrease) in Deposits Net change in short-term borrowings Proceeds from (Repayments of) Short-term Debt Advances of long-term borrowings Proceeds from Issuance of Long-term Debt Repayments of long-term borrowings Repayments of Long-term Debt Cash dividends paid to preferred shareholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Cash dividends paid to common shareholders Payments of Ordinary Dividends, Common Stock Purchase of common shares to treasury Payments for Repurchase of Common Stock Common stock issued, net Proceeds from Issuance of Common Stock Other, net Proceeds from (Payments for) Other Financing Activities Net cash provided 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), Including Exchange Rate Effect Cash and cash equivalents at beginning of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Cash payments for: Supplemental Cash Flow, Cash Payments [Abstract] Supplemental Cash Flow, Cash Payments [Abstract] Interest on deposits and borrowings Interest Paid, Excluding Capitalized Interest, Operating Activities Federal and state income taxes Income Taxes Paid Supplemental schedule of non-cash investing activities: Supplemental Non Cash Investing Activities [Abstract] Supplemental Non Cash Investing Activities [Abstract] Transfer of loans to other real estate owned Transfer Of Loans Held For Investment To Other Real Estate The amount represents loans transferred from the held for investment category to other real estate owned. Lease right of use assets obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Acquisition: Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) [Abstract] Non-cash assets acquired: Noncash or Part Noncash Acquisition, Value of Assets Acquired [Abstract] Investment securities Noncash or Part Noncash Acquisition, Investments Acquired Loans Loans Non Cash Cf Loans Non Cash Cf Premises and equipment Noncash or Part Noncash Acquisition, Fixed Assets Acquired Bank owned life insurance Noncash or Part Noncash Acquisition, Bank Owned Life Insurance Noncash or Part Noncash Acquisition, Bank Owned Life Insurance Accrued interest receivable Noncash Or Part Noncash Acquisition Accrued Interest Receivable Assumed The amount of interest receivable that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition that are not presented as a separate disclosure or otherwise listed in the existing taxonomy. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Goodwill Noncash Or Part Noncash Acquisition Goodwill Acquired Noncash Or Part Noncash Acquisition Goodwill Acquired Other intangible assets Noncash or Part Noncash Acquisition, Intangible Assets Acquired Other assets Noncash or Part Noncash Acquisition, Other Assets Acquired Total non-cash assets acquired Noncash or Part Noncash Acquisition, Value of Assets Acquired Liabilities assumed: Noncash or Part Noncash Acquisition, Value of Liabilities Assumed [Abstract] Deposits Noncash Or Part Noncash Acquisition Deposits Assumed The amount of deposits that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition that are not presented as a separate disclosure or otherwise listed in the existing taxonomy. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Short-term borrowings Noncash Or Part Noncash Acquisition Short Term Borrowing Assumed The amount of short-term borrowings that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Long-term borrowings Noncash Or Part Noncash Acquisition Long Term Borrowing Assumed Noncash Or Part Noncash Acquisition Long Term Borrowing Assumed Junior subordinated debentures issued to capital trusts Noncash Or Part Noncash Acquisitions Junior Subordinated Debentures Issued To Capital Trusts Noncash or part noncash acquisition junior subordinated debentures issued to capital trusts. Accrued expenses and other liabilities Noncash or Part Noncash Acquisition, Other Liabilities Assumed Total liabilities assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Net non-cash assets acquired Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) Net cash and cash equivalents acquired in acquisition Common stock issued in acquisition Stock Issued Leases [Abstract] Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Interest on lease liabilities Finance Lease, Interest Expense Operating lease cost Operating Lease, Cost Short-term lease cost Short-term Lease, Cost Variable lease cost Variable Lease, Cost Sublease income Sublease Income Total lease cost (included in net occupancy and equipment expense) Lease, Cost Debt Security Category [Axis] Debt Security Category [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] U.S. Treasury securities US Treasury Securities [Member] Amortized Cost Debt Securities, Held-to-maturity Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Fair Value Debt Securities, Held-to-maturity, Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [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] 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 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] 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] Cash and due from banks Cash and Cash Equivalents, Fair Value Disclosure Interest bearing deposits with banks Interest-bearing Deposits in Banks and Other Financial Institutions Total investment securities held to maturity Net loans Loans Receivable, Fair Value Disclosure Accrued interest receivable Accrued Investment Income Receivable Federal Reserve Bank and Federal Home Loan Bank stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Deposits without stated maturities Deposits Without Stated Maturities Fair Value Disclosure This item represents the aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, and negotiable orders of withdrawal (NOW). Deposits with stated maturities Time Deposits Short-term borrowings Short Term Borrowings Fair Value Disclosure Short term borrowings fair value disclosure Long-term borrowings Long Term Borrowings Fair Value Disclosure Long term borrowings fair value disclosure Junior subordinated debentures issued to capital trusts Subordinated Debt Obligations, Fair Value Disclosure Accrued interest payable Accrued Interest Payable Fair Value Disclosure Accrued interest payable fair value disclosure Core Deposits Other Core Deposits and Other Core Deposits and Other Intangible Assets [Member] Core Deposits and Other Intangible Assets [Member] Goodwill Goodwill Goodwill impairment Goodwill, Impairment Loss Weighted average amortization period, years Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Impairment of core deposits and other intangibles Impairment of Intangible Assets, Finite-lived Gross Rents, 2018 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year Gross Rents, 2019 Operating Leases, Future Minimum Payments, Due in Two Years Gross Rents, 2020 Operating Leases, Future Minimum Payments, Due in Three Years Gross Rents, 2021 Operating Leases, Future Minimum Payments, Due in Four Years Gross Rents, 2022 Operating Leases, Future Minimum Payments, Due in Five Years Gross Rents, Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Gross Rents, Total Lease Payments Operating Leases, Future Minimum Payments Due Sublease Income, 2018 Future Minimum Sublease Rentals, Sale Leaseback Transactions, Remainder of Fiscal Year Sublease Income, 2019 Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Two Years Sublease Income, 2020 Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Three Years Sublease Income, 2021 Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Four Years Sublease Income, 2022 Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Five Years Sublease Income, Thereafter Future Minimum Sublease Rentals, Sale Leaseback Transactions, Thereafter Sublease Income, Total Lease Payments Future Minimum Sublease Rentals, Sale Leaseback Transactions Net Rents, 2018 Net Operating Leases Future Minimum Payments Due Remainder Of Fiscal Year Net Operating Leases Future Minimum Payments Due Remainder Of Fiscal Year Net Rents, 2019 Net Operating Leases Future Minimum Payments Due In Two Years Net Operating Leases Future Minimum Payments Due In Two Years Net Rents, 2020 Net Operating Leases Future Minimum Payments Due In Three Years Net Operating Leases Future Minimum Payments Due In Three Years Net Rents, 2021 Net Operating Leases Future Minimum Payments Due In Four Years Net Operating Leases Future Minimum Payments Due In Four Years Net Rents, 2022 Net Operating Leases Future Minimum Payments Due In Five Years Net Operating Leases Future Minimum Payments Due In Five Years Net Rents, Thereafter Net Operating Leases Future Minimum Payments Due Thereafter Net Operating Leases Future Minimum Payments Due Thereafter Net Rents, Total Lease Payments Net Operating Leases Future Minimum Payments Due Net Operating Leases Future Minimum Payments Due Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] 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] Credit exposure - by internally assigned risk rating Loans Classified By Internally Assigned Risk Rating Loans classified by internally assigned risk rating. Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Non-Interest Expenses Non-Interest Expenses [Member] Non-Interest Expenses [Member] Components of Income Tax Expense: Affordable Housing Tax Credits, Income Tax Expense [Abstract] Affordable Housing Tax Credits, Income Tax Expense [Abstract] Affordable housing tax credits and other tax benefits Affordable Housing Tax Credits and Other Tax Benefits, Amount Other tax credit investment credits and tax benefits Other Tax Credit Investment Credits And Tax Benefits Other Tax Credit Investment Credits And Tax Benefits Total reduction in income tax expense Income Tax Expense (Benefit), Reduction From Affordable Housing Tax Credits And Other Tax Credit Investments Income Tax Expense (Benefit), Reduction From Affordable Housing Tax Credits And Other Tax Credit Investments Amortization of Tax Credit Investments: Affordable Housing Tax Credits, Amortization [Abstract] Affordable Housing Tax Credits, Amortization [Abstract] Affordable housing tax credit investment losses Amortization Method Qualified Affordable Housing Project Investments, Amortization, Investment Losses Amortization Method Qualified Affordable Housing Project Investments, Amortization, Investment Losses Affordable housing tax credit investment impairment losses Amortization Method Qualified Affordable Housing Project Investments, Amortization, Impairment Losses Amortization Method Qualified Affordable Housing Project Investments, Amortization, Impairment Losses Other tax credit investment losses Amortization Of Other Tax Credit Investment Losses Amortization Of Other Tax Credit Investment Losses Other tax credit investment impairment losses Amortization Of Other Tax Credit Impairment Losses Amortization Of Other Tax Credit Impairment Losses Total amortization of tax credit investments recorded in non-interest expense Amortization Of Tax Credit Investments Amortization Of Tax Credit Investments Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Loan Servicing Rights 2019 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2020 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment With No Related Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded Investment With Related Allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Recorded Investment Impaired Financing Receivable, Recorded Investment Unpaid Contractual Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Related Allowance Impaired Financing Receivable, Related Allowance Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] 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] Reclassification Out of Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Unrealized gains (losses) on AFS securities before tax Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Unrealized losses on derivatives (cash flow hedges) before tax Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Defined Benefit Pension Plan Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Reclassification Out Of Accumulated Other Comprehensive Loss Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Gains (losses) on securities transactions, net Tax effect Income Tax Expense (Benefit) Total net of tax Interest expense Interest Expense Amortization of net loss Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Tax effect Reclassification from AOCI, Current Period, Tax Total reclassifications, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Noninterest Income Noninterest Income [Member] Noninterest Income [Member] Interest rate swaps Number of credit swaps Number of Credit Risk Derivatives Held Aggregate notional amount of derivative asset Derivative Asset, Notional Amount Derivative instrument not designated as hedging instruments, liability Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Accumulated net after-tax losses related to effective cash flow hedges AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Estimated amount of interest rate derivatives to be reclassified to interest expense Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Fee income related to derivative interest rate swaps executed with commercial loan customers Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Aggregate fair value of net liability position Derivative, Net Liability Position, Aggregate Fair Value Earnings Per Common Share Earnings Per Share [Text Block] Segment Reporting [Abstract] Business Segments Segment Reporting Disclosure [Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Troubled Debt Restructurings Financing Receivable, Modifications [Line Items] Number of contracts, troubled restructurings (in contract) Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Number of contracts, troubled debt restructurings subsequently defaulted (in contract) Financing Receivable, Modifications, Subsequent Default, Number of Contracts Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment Operating leases, ROU assets Operating Lease, Right-of-Use Asset Finance leases, ROU assets Finance Lease, Right-of-Use Asset Total ROU assets Operating And Finance Lease, Right-of-Use-Asset Operating And Finance Lease, Right-of-Use-Asset Operating leases, liabilities Operating Lease, Liability Finance leases, liabilities Finance Lease, Liability Lease liabilities Operating And Finance Lease, Liability Operating And Finance Lease, Liability Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due in one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Residential mortgage-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due in one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Residential mortgage-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Total investment securities available for sale Debt Securities, Available-for-sale Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Less than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months More than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Less than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss More than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Provision for loan losses Provision for Loan and Lease Losses Provision for unfunded letters of credit Provision For Unfunded Letters Of Credit Provision charged for the period based on estimated losses related to unfunded letters of credit. Total provision for credit losses Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Performing Loans Performing Financial Instruments [Member] Non-Performing Loans Nonperforming Financial Instruments [Member] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Recorded Investment [Line Items] Total Loans Loans Classified By Payment Activity Loans classified by payment activity. Non-performing loans represent all past due loans and performing loans represent all current loans. Preferred Stock Preferred Stock [Member] Surplus Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Treasury Stock Treasury Stock [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-02 Accounting Standards Update 2016-02 [Member] ASU 2017-08 Accounting Standards Update 2017-08 [Member] ASU 2016-01 Accounting Standards Update 2016-01 [Member] ASU 2017-02 Accounting Standards Update 2017-02 [Member] Accounting Standards Update 2017-02 [Member] ASU 2016-16 Accounting Standards Update 2016-16 [Member] Beginning balance Stockholders' Equity Attributable to Parent Beginning balance (in shares) Shares, Outstanding Adjustment due to adoption of ASUs Cumulative Effect of New Accounting Principle in Period of Adoption Beginning Balance, Adjusted Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Cash dividends declared: Dividends, Cash [Abstract] Cash dividends declared on preferred stock Dividends, Preferred Stock, Cash Cash dividends declared on common stock Dividends, Common Stock, Cash Effect of stock incentive plan, net (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Effect of stock incentive plan, net Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Common stock issued (in shares) Stock Issued During Period, Shares, New Issues Common stock issued Stock Issued During Period, Value, New Issues Ending balance Ending balance (in shares) Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance, beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Acquisition Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Net increase in expected cash flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference Balance, end of period Impaired collateral dependent loans, charge-offs Impaired Collateral Dependent Loans Charge Offs This amount represents the direct charge-off the allowance for loan losses related to the collateral dependent impaired loans. Collateral dependent impaired loans, recorded investment Collateral Dependent Impaired Loans Carrying Value Collateral Dependent Impaired Loans Carrying Value Specific valuation allowance allocations Impaired Loans Specific Valuation Allowance Allocation Specific valuation for loan losses related to impaired loans which are evaluated for impairment on an individual basis. Reported net carrying amount of impaired loans Impaired Loans Reported Net Carrying Value Impaired loans, reported net carrying value. Valuation of loan servicing rights, prepayment rate Fair Value Unobservable Inputs Quantitative Information For Assets Measured On Nonrecurring Basis Loan Servicing Rights Prepayment Rate Fair value, unobservable inputs, quantitative information for assets measured on non-recurring basis, loan servicing rights prepayment rate. Valuation of loan servicing rights, discount rate Fair Value Unobservable Inputs Quantitative Information For Assets Measured On Nonrecurring Basis Loan Servicing Rights Discount Rate Fair value, unobservable inputs, quantitative information for assets measured on non-recurring basis, loan servicing rights discount rate. Net recoveries of net impairment charges Mortgage Servicing Rights (MSR) Impairment (Recovery) Foreclosed assets measured at fair value upon initial recognition Foreclosed Assets Measured At Fair Value Certain foreclosed assets (consisting of other real estate owned and other repossessed assets), upon initial recognition and transfer from loans, are re-measured and reported at fair value through a charge-off to the allowance for loan losses based upon the fair value of the foreclosed assets. The fair value of a foreclosed asset, upon initial recognition, is typically estimated using Level 3 inputs, consisting of an appraisal that is significantly adjusted based on customized discounting criteria. Foreclosed asset charge-offs Foreclosed Asset Charge-offs Foreclosed Asset Charge-offs Loss due to re-measurement of repossessed assets Loss Due To Remeasurement Of Repossessed Asset At Fair Value This element represents a loss due to the re-measurement of repossessed asset at fair value subsequent to initial recognition. Schedule of Loan Portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Changes in Accretable Yield for PCI Loans Schedule Of Accretable Yield For Covered Loans [Table Text Block] Schedule of Accretable Yield for Covered Loans [Text Block] Past Due, Non-Accrual and Current Loans by Loan Portfolio Class Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Impaired Loans by Loan Portfolio Class Impaired Financing Receivables [Table Text Block] Average Recorded Investment and Interest Income Recognized on Impaired Loans Schedule Of Average Recorded Investment And Interest Income Recognized On Impaired Loans [Table Text Block] Schedule of average recorded investment and interest income recognized on impaired loans [Table Text Block] Pre-Modification and Post-Modification Outstanding Recorded Investments and Non-PCI Loans that Subsequently Defaulted Troubled Debt Restructurings on Financing Receivables [Table Text Block] Risk Category of Loans Financing Receivable Credit Quality Indicators [Table Text Block] Recorded Investment in Loan Classes Based on Payment Activity Schedule Of Recorded Investment In Loan Classes Based On Payment Activity [Table Text Block] Schedule Of Recorded Investment In Loan Classes Based On Payment Activity [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Leases Lessor, Direct Financing Leases [Text Block] Leases Lessor, Sales-type Leases [Text Block] Leases Lessee, Operating Leases [Text Block] Leases Lessee, Finance Leases [Text Block] Leases Sale Leaseback Transactions [Text Block] Accounting Changes and Error Corrections [Abstract] New Authoritative Accounting Guidance New Accounting Pronouncements and Changes in Accounting Principles [Text Block] 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 Fair Value Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Cash flow hedge interest rate swaps Cash Flow Hedging [Member] Fair value hedge interest rate swaps Interest rate swaps Interest Rate Contract [Member] Mortgage banking derivatives Mortgage Banking Derivatives [Member] Mortgage Banking Derivatives [Member] Other Assets Derivative Liability, Fair Value, Gross Asset Other Liabilities Derivative Liability, Fair Value, Gross Liability Notional Amount Derivative, Notional Amount Derivatives And Hedging Activities [Table] Derivatives And Hedging Activities [Table] Derivatives And Hedging Activities [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Repurchase agreements Repurchase Agreements [Member] Derivatives And Hedging Activities [Line Items] Derivatives And Hedging Activities [Line Items] Derivatives And Hedging Activities [Line Items] Offsetting Assets Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Derivative Asset, Fair Value, Gross Asset Gross Amounts Offset Derivative Asset, Fair Value, Gross Liability Net Amounts Presented Derivative Asset Gross Amounts Not Offset, Financial Instruments Derivative, Collateral, Obligation to Return Securities Gross Amounts Not Offset, Cash Collateral Derivative, Collateral, Obligation to Return Cash Net Amount Derivative Asset, Fair Value, Amount Offset Against Collateral Offsetting Liabilities Offsetting Derivative Liabilities [Abstract] Gross Amounts Recognized Gross Amounts Offset Net Amounts Presented Derivative Liability Gross Amounts Not Offset, Financial Instruments Derivative, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Derivative, Collateral, Right to Reclaim Cash Net Amount Derivative Liability, Fair Value, Amount Offset Against Collateral Offsetting Repurchase Agreement Liabilities Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Securities Sold under Agreements to Repurchase, Gross Gross Amounts Offset Securities Sold under Agreements to Repurchase, Asset Net Amounts Presented Securities Sold under Agreements to Repurchase Gross Amounts Not Offset, Financial Instruments Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash Net Amount Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral Offsetting Liabilities Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross Gross Amounts Offset Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset Net Amounts Presented Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned Gross Amounts Not Offset, Financial Instruments Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash Net Amount Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral Weighted-average remaining lease term, operating lease Operating Lease, Weighted Average Remaining Lease Term Weighted-average remaining lease term, finance lease Finance Lease, Weighted Average Remaining Lease Term Weighted-average discount rate, operating lease Operating Lease, Weighted Average Discount Rate, Percent Weighted-average discount rate, finance lease Finance Lease, Weighted Average Discount Rate, Percent Non-designated hedge interest rate derivatives Interest Rate Derivative Instruments Not Designated as Hedging Instruments [Abstract] Other non-interest expense Derivative, Gain (Loss) on Derivative, Net Balance Sheet Offsetting Balance Sheet Offsetting Disclosure [Text Block] Balance Sheet Offsetting Disclosure [Text Block] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Interest income Interest Income [Member] Loans Derivatives designated as hedging instruments Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gain (loss) related to derivative interest rate swaps Gain (loss) related to hedged loans Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Reconciliation of Gross Unrecognized Tax Benefits Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Beginning balance Unrecognized Tax Benefits Additions based on tax positions related to current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Ending balance Tax Credit Investments Income Tax Disclosure [Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Commercial and Industrial Commercial Real Estate Residential Mortgage Loans acquired with discounts related to credit quality Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for loan losses: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] 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 Financing Receivable, Allowance for Credit Losses Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Total Financing Receivable, Gross Other Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Estimated Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Assets and Liabilities Measured at Fair Value on a Recurring and Non-Recurring Basis Fair Value, by Balance Sheet Grouping [Table Text Block] Carrying Amounts and Estimated Fair Values of Financial Instruments Carrying Amounts And Estimated Fair Values Of Financial Instruments [Table Text Block] Carrying amounts and estimated fair values of financial instruments Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring fair value measurements Fair Value, Measurements, Recurring [Member] Non-recurring fair value measurements Fair Value, Measurements, Nonrecurring [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Investment securities Investments, Fair Value Disclosure [Abstract] Available for sale Loans held for sale Loans Held-for-sale, Fair Value Disclosure Other assets Total assets Assets, Fair Value Disclosure Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Other liabilities Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Non-recurring fair value measurements: Fair Value Measurements, Nonrecurring Value Measurement [Abstract] Collateral dependent impaired loans Collateral Dependent Impaired Loans Fair value of the collateral dependent impaired loans. Loan servicing rights Servicing Asset at Fair Value, Amount Foreclosed assets Repossessed Assets Total Fair Value, Net Asset (Liability) Unpaid principal balances of loans held for sale Principal Amount Outstanding on Loans Held-for-sale or Securitization or Asset-backed Financing Arrangement Accounting Policies [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Sale Leaseback Transaction [Table] Sale Leaseback Transaction [Table] Sale Leaseback Transaction, Description [Axis] Sale Leaseback Transaction, Description [Axis] Sale Leaseback Transaction, Name [Domain] Sale Leaseback Transaction, Name [Domain] Sale leaseback transaction, March 2019 Sale Leaseback Transaction, March 2019 [Member] Sale Leaseback Transaction, March 2019 [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, forecast Scenario, Forecast [Member] Sale Leaseback Transaction [Line Items] Sale Leaseback Transaction [Line Items] Sales-type and direct financing leases total net investment Sales-type and Direct Financing Leases, Lease Receivable Sales-type and direct financing leases receivables Sales-type and Direct Financing Leases, Lease Receivables Sales-type and Direct Financing Leases, Lease Receivables Sales-type and direct financing leases unguaranteed residuals Sales-type And Direct Financing Lease, Unguaranteed Residual Asset Sales-type And Direct Financing Lease, Unguaranteed Residual Asset Lease income Lease Income Sale-leaseback, number of properties Sale Leaseback Transaction, Number Of Properties Sale Leaseback Transaction, Number Of Properties Sale-leaseback, number of branches Sale Leaseback Transaction, Number Of Branches Sale Leaseback Transaction, Number Of Branches Sale-leaseback, number of corporate offices Sale Leaseback Transaction, Number Of Corporate Offices Sale Leaseback Transaction, Number Of Corporate Offices Sale-leaseback sale price Sale Leaseback Transaction, Net Proceeds, Investing Activities Pre-tax net gain sale-leaseback Sale and Leaseback Transaction, Gain (Loss), Net Operating leases, ROU assets Operating lease, term of contract Lessee, Operating Lease, Term of Contract Expected lease costs Lease costs Operating Leases, Rent Expense, Net Sublease income Operating Leases, Rent Expense, Sublease Rentals Amortized Cost Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Due in one year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five years through ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost Residential mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Amortized Cost Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Due in one year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five years through ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Residential mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value Total investment securities held to maturity Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] New Accounting Guidance Adopted and Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrealized Gains and Losses on Available for Sale (AFS) Securities Unrealized Gains and (Losses) on Derivatives Defined Benefit Pension Plan Total Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent, Net of Tax [Roll Forward] Other comprehensive (loss) income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from other comprehensive (loss) income Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Investment Securities [Table] Investment Securities [Table] Investment Securities [Table] US States and Political Subdivisions Debt Securities, Special Revenue Bonds, Impaired Securities US States And Political Subdivisions Debt Securities, Special Revenue Bonds, Impaired Securities [Member] US States And Political Subdivisions Debt Securities, Special Revenue Bonds, Impaired Securities [Member] US States and Political Subdivisions Debt Securities, Special Revenue Bonds US States And Political Subdivisions Debt Securities, Special Revenue Bonds [Member] US States And Political Subdivisions Debt Securities, Special Revenue Bonds [Member] Single Issuer Trust Preferred Securities Single Issuer Trust Preferred Securities [Member] Single-issuer securities [Member] Report Date [Axis] Report Date [Axis] Financial Statement Filing Date [Domain] Financial Statement Filing Date [Domain] Non-Rated Not Rated [Member] Not-Rated [Member] Investment Securities [Line Items] Investment Securities [Line Items] Investment securities [line items] Number of security positions in the securities held to maturity portfolio in an unrealized loss position (in security) Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Fair value of investments held to maturity pledged as collateral Debt Securities, Held-to-maturity, Restricted Weighted-average remaining expected life of residential mortgage-backed securities held to maturity, years Weighted Average Remaining Expected Life Of Residential Mortgage Backed Securities Held To Maturity Weighted-average remaining expected life of residential mortgage-backed securities held to maturity Number of security positions in the securities available for sale portfolio in an unrealized loss position (in security) Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Fair value of securities available for sale pledged as collateral Debt Securities, Available-for-sale, Restricted Weighted-average remaining expected life of residential mortgage-backed securities available for sale, years Weighted Average Remaining Expected Life Of Residential Mortgage Backed Securities Available For Sale Weighted-average remaining expected life of residential mortgage-backed securities available for sale Amortized cost Other than temporary impairment losses recognized in earnings Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Recognized in Earnings Gross unrealized losses 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 Statement of Financial Position [Abstract] Held to maturity, fair value Series A Series B Preferred stock, par value (usd per share) Preferred Stock, No Par Value Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Common stock, par value (usd per share) Common Stock, No Par Value Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Treasury stock, shares (in shares) Treasury Stock, Shares Number of federal renewable energy tax credit funds Number Of Federal Renewable Energy Tax Credit Funds Number Of Federal Renewable Energy Tax Credit Funds Number of solar generator units Number Of Solar Generator Units Number Of Solar Generator Units Federal tax credit benefit Investment Tax Credit Number of tax opinions Number Of Tax Opinions Number Of Tax Opinions Tax credit recognized and measured for each tax position (as a percent) Percentage Of The Tax Credit Recognized And Measured For Each Tax Position Percentage Of The Tax Credit Recognized And Measured For Each Tax Position Percentage of solar generator units positively identified (over) Percentage Of Solar Generator Units Positively Identified Percentage Of Solar Generator Units Positively Identified Increase to the provision for income taxes Tax Adjustments, Settlements, and Unusual Provisions Estimated loss on the related tax positions Estimated Future Tax Adjustments, Settlements, And Unusual Provisions Estimated Future Tax Adjustments, Settlements, And Unusual Provisions Uncertain tax position, accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Income Statement [Abstract] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Trust and investment services Investment Advisory, Management and Administrative Service [Member] Service charges on deposit accounts Deposit Account [Member] Interest Income Interest Income (Expense), Net [Abstract] Interest and fees on loans Interest and Fee Income, Loans and Leases Interest and dividends on investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Tax-exempt Interest Income, Securities, Operating, Tax Exempt Dividends Dividend Income, Operating Interest on federal funds sold and other short-term investments Interest On Federal Funds Sold And Other Short Term Investments Interest income on federal funds sold and other short-term investments, including interest bearing deposits with banks. Federal funds sold represent the excess federal funds held by one commercial bank which it lends to another commercial bank, usually at an agreed-upon (federal funds) rate of interest. Such loans generally are of short-duration (overnight). Total interest income Interest and Dividend Income, Operating Interest Expense Interest Expense [Abstract] Interest on deposits: Interest Expense, Domestic Deposits [Abstract] Savings, NOW and money market Interest Expense, NOW Accounts, Money Market Accounts, and Savings Deposits Time Interest Expense, Time Deposits Interest on short-term borrowings Interest Expense, Short-term Borrowings Interest on long-term borrowings and junior subordinated debentures Interest Expense, Long-term Debt Total interest expense Net Interest Income Interest Income (Expense), Net Net Interest Income After Provision for Credit Losses Interest Income (Expense), after Provision for Loan Loss Non-Interest Income Noninterest Income [Abstract] Revenue from contracts with customer Revenue from Contract with Customer, Including Assessed Tax Insurance commissions Insurance Commissions and Fees Other-than-temporary impairment losses on securities Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings Portion recognized in other comprehensive income (before taxes) Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Parent Net impairment losses on securities recognized in earnings Fees from loan servicing Servicing Fees, Net1 Servicing Fees, Net1 Gains on sales of loans, net (Losses) gains on sales of assets, net Bank owned life insurance Other Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-Interest Expense Noninterest Expense [Abstract] Salary and employee benefits expense Labor and Related Expense Net occupancy and equipment expense Occupancy, Net FDIC insurance assessment Federal Deposit Insurance Corporation Premium Expense Professional and legal fees Professional And Legal Fees Fees charged for services from professionals, such as lawyers and accountants, and legal fees equal to the amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. Amortization of tax credit investments Investment Tax Credit, Amortization Investment Tax Credit, Amortization Telecommunication expense Communications and Information Technology Other Other Noninterest Expense Total non-interest expense Noninterest Expense Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Net Income Dividends on preferred stock Preferred Stock Dividends, Income Statement Impact Net Income Available to Common Shareholders Earnings Per Common Share: Cash Dividends Declared per Common Share (usd per share) Weighted Average Number of Common Shares Outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Summary of Reconciliation of Gross Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Allowance for loan losses Allowance for unfunded letters of credit Allowance For Unfunded Letters Of Credit Allowance for Unfunded Letters Of Credit Total allowance for credit losses Allowance For Credit Losses Allowance for loan and unfunded letters of credit losses. Federal renewable energy tax credit investments, net Federal Renewable Energy Tax Credit Investments, Net Federal Renewable Energy Tax Credit Investments, Net Federal renewable energy tax credit investments, net, amount per fund Federal Renewable Energy Tax Credit Investments, Net, Amount Per Fund Federal Renewable Energy Tax Credit Investments, Net, Amount Per Fund Other than temporary impairment, other tax credit investments Other Than Temporary Impairment Losses On Other Tax Credits Investments Other Than Temporary Impairment Losses On Other Tax Credits Investments Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract] 2019 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year 2020 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years 2021 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years 2022 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years 2023 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years Thereafter Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter Total lease payments Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Less: present value discount Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount Total Operating Lease Liabilities, Payments Due [Abstract] 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five