Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Interest Rate Swap [Member] Interest Rate Swap [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Bank $25m LIBOR Swap effective 8/1/13 [Member] Bank $25m LIBOR Swap effective 8/1/13 [Member] Bank $25m LIBOR Swap effective 8/1/13 [Member] Bank $25m LIBOR Swap effective 3/1/14 [Member] Bank $25m LIBOR Swap effective 3/1/14 [Member] Bank $25m LIBOR Swap effective 3/1/14 [Member] Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] Bank $25m LIBOR Swap effective 9/2/14 [Member] Bank $25m LIBOR Swap effective 9/2/14 [Member] Bank $25m LIBOR Swap effective 9/2/14 [Member] Bank $40m LIBOR Swap 2017 effective 3/22/17 [Member] Bank $40m LIBOR Swap 2017 effective 3/22/17 [Member] Bank $40m LIBOR Swap 2017 effective 3/22/17 [Member] Bank $60m LIBOR Swap 2017 effective 3/22/17 [Member] Bank $60m LIBOR Swap 2017 effective 3/22/17 [Member] Bank $60m LIBOR Swap 2017 effective 3/22/17 [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Statement, Business Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Private Banking Segment [Member] Private Banking Segment [Member] Private Banking Segment [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Weighted Average [Member] Weighted Average [Member] Derivative [Line Items] Derivative [Line Items] Objectives for Using Derivative Instruments Objectives for Using Derivative Instruments Number of Interest Rate Derivatives Held Number of Interest Rate Derivatives Held Derivative, Inception Date Derivative, Inception Date Derivative Asset, Notional Amount Derivative Asset, Notional Amount Derivative, Term of Contract Derivative, Term of Contract Derivative, Fixed Interest Rate Derivative, Fixed Interest Rate Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Investments [Abstract] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Noncontrolling Interest Components [Abstract] Noncontrolling Interest Components [Abstract] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Anchor [Member] Anchor [Member] Anchor [Member] - a company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. BOS [Member] BOS [Member] BOS [Member] - a company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. DGHM [Member] DGHM [Member] DGHM [Member] - a company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. Redeemable Noncontrolling Interest [Line Items] Redeemable Noncontrolling Interest [Line Items] Redeemable and Nonredeemable Noncontrolling Interest Redeemable and Nonredeemable Noncontrolling Interest Redeemable and Nonredeemable Noncontrolling Interest - Total of noncontrolling interests held in both temporary (redeemable) and permanent (nonredeemable) (mezzanine) equity. Redeemable Noncontrolling Interests Redeemable Noncontrolling Interest, Equity, Carrying Amount Nonredeemable Noncontrolling Interest Nonredeemable Noncontrolling Interest Fair Value Disclosures [Abstract] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block] Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Table Text Block] Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Description of New Accounting Pronouncements Not yet Adopted [Text Block] Description of New Accounting Pronouncements Not yet Adopted [Text Block] Noncontrolling Interest [Abstract] Redeemable Noncontrolling Interest [Table Text Block] Redeemable Noncontrolling Interest [Table Text Block] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Earnings Per Share, Basic [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Segments [Axis] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series D Preferred Stock [Member] Series D Preferred Stock [Member] Common Stock [Member] Common Stock [Member] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Net income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Income (Loss) from Continuing Operations Attributable to Parent Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Decrease/ (increase) in noncontrolling interests' redemption values (1) Noncontrolling Interest, Change in Redemption Value Dividends on preferred stock Preferred Stock Dividends, Income Statement Impact Total adjustments to income attributable to common shareholders Preferred Stock Dividends and Other Adjustments Net income from continuing operations attributable to common shareholders, treasury stock method Net Income (Loss) from Continuing Ops Available to Common Stockholders, Basic Net Income (Loss) from Continuing Operations Available to Common Stockholders, Basic Net income from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income attributable to common shareholders, treasury stock method Net Income (Loss) Available to Common Stockholders, Basic Weighted Average Basic Common Shares Outstanding Weighted Average Number of Shares Outstanding, Basic Income (Loss) from Continuing Operations, Per Basic Share Income (Loss) from Continuing Operations, Per Basic Share Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Earnings Per Share, Basic Earnings Per Share, Basic Fee and other income [Abstract] Fee and other income [Abstract] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Commercial and industrial [Member] Commercial Loan [Member] Commercial and Industrial Portfolio Segment [Member] Commercial and Industrial Portfolio Segment [Member] Commercial and Industrial Portfolio Segment [Member] - Portfolio segment of the company's total financing receivables related to commercial and industrial receivables - including the commercial and industrial class of financing receivables and the commercial tax exempt class of financing receivables. Commercial real estate [Member] Commercial Real Estate Portfolio Segment [Member] Construction and land [Member] Construction Loans [Member] Residential [Member] Residential Portfolio Segment [Member] Home equity [Member] Home Equity Line of Credit [Member] Consumer and other [Member] Consumer Portfolio Segment [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Extended Maturity [Member] Extended Maturity [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications, Number of Contracts Financing Receivable, Modifications, Number of Contracts Financing Receivable, Modifications, Pre-Modification Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Financing Receivable, Modifications, Subsequent Default, Number of Contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Financing Receivable, Modifications, Subsequent Default, Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment Fair Value Disclosures Text [Abstract] Fair Value Disclosures Text [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [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 [Member] Portion at Fair Value Measurement [Member] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [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] US Government Securities, at Carrying Value US Government Securities, at Carrying Value Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-01 [Member] Accounting Standards Update 2016-01 [Member] Accounting Standards Update 2017-12 [Member] Accounting Standards Update 2017-12 [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassification adjustment for net realized (gain)/ loss included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Other comprehensive income/ (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Stockholders' Equity Parenthetical [Abstract] Stockholders' Equity Parenthetical [Abstract] Statement [Table] Statement [Table] Statement, Equity Components [Axis] Statement [Line Items] Statement [Line Items] Shares of common stock issued Stock Issued During Period, Shares, New Issues Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Stock Issued During Period, Shares, Share-based Compensation, Gross Stock Issued During Period, Shares, Share-based Compensation, Gross Stock Issued During Period, Shares, Share-based Compensation, Forfeited Stock Issued During Period, Shares, Share-based Compensation, Forfeited Shares of stock withheld for employee taxes Shares of stock withheld for employee taxes Number of shares related to Restricted Stock Award withheld for employee taxes. Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Instruments and Hedging Activities Disclosure [Text Block] Loans and Leases Receivable Disclosure [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Past Due Financing Receivables [Table Text Block] Past Due Financing Receivables [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] Impaired Financing Receivables [Table Text Block] Impaired Financing Receivables [Table Text Block] Troubled Debt Restructurings on Financing Receivables [Table Text Block] Troubled Debt Restructurings on Financing Receivables [Table Text Block] Loan Participation Amounts by Loan Type [Table Text Block] Loan Participation Amounts by Loan Type [Table Text Block] [Table Text Block] for Loan Participation Amounts by Loan Type [Table] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Adjustment Loans Receivable, Fair Value Adjustment Loans Receivable, Fair Value Adjustment Nonaccrual Loans Receivable [Abstract] Nonaccrual Loans Receivable [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Commercial Tax Exempt [Member] Commercial Tax Exempt [Member] Commercial Tax Exempt [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment, Nonaccrual Status Financing Receivable, Recorded Investment, Nonaccrual Status Derivative Instrument Risk [Axis] Foreign Exchange Contract [Member] Foreign Exchange Contract [Member] Loan Participations and Assignments [Member] Loan Participations and Assignments [Member] Other Contract [Member] Other Contract [Member] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Derivative, Number of Instruments Held Derivative, Number of Instruments Held Derivative, Notional Amount Derivative, Notional Amount Derivative, Underlying Risk, Description Derivative, Underlying Risk, Description Derivatives not designated as hedges, effect on statement of operations [Abstract] Derivatives not designated as hedges, effect on statement of operations [Abstract] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Interest Rate Contract [Member] Interest Rate Contract [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Banyan Acquisition and WMT Management Restructuring Plan [Member] Banyan Acquisition and WMT Management Restructuring Plan [Member] Banyan Acquisition and WMT Management Restructuring Plan [Member] Wealth Management and Trust Segment [Member] Wealth Management and Trust Segment [Member] Wealth Management and Trust Segment [Member] Restructuring Cost and Reserve [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Employee Severance [Member] Employee Severance [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve, beginning of period Restructuring Reserve Restructuring and Related Cost, Incurred Cost Restructuring and Related Cost, Incurred Cost Restructuring Reserve, Settled with Cash Payments for Restructuring Restructuring Reserve, end of period Restructuring and Related Cost, Cost Incurred to Date Restructuring and Related Cost, Cost Incurred to Date Restructuring and Related Cost, Expected Cost Remaining Restructuring and Related Cost, Expected Cost Remaining Investments, Other Disclosures [Abstract] Investments, Other Disclosures [Abstract] Cost Method Investments, Additional Information Cost Method Investments, Additional Information Amortization Method Qualified Affordable Housing Project Investments Amortization Method Qualified Affordable Housing Project Investments Consolidated Statement of Stockholders' Equity [Abstract] Consolidated Statement of Stockholders' Equity [Abstract] Preferred Stock Including Additional Paid in Capital [Member] Preferred Stock Including Additional Paid in Capital [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Reclassification due to change in accounting principles New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Net income attributable to the Company Net Income (Loss) Attributable to Parent Dividends paid to common shareholders Dividends, Common Stock, Cash Dividends paid to preferred shareholders Dividends, Preferred Stock, Cash Net Change in Noncontrolling Interests Net Change in Noncontrolling Interests Net Change in Noncontrolling Interests Stock Repurchased During Period, Value Stock Repurchased During Period, Value Net proceeds from issuance of [Abstract] Net proceeds from issuance of [Abstract] Net proceeds from issuance of [Abstract] Net proceeds from issuance of common stock Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of shares through incentive stock grants, net of shares forfeited, canceled, or withheld for employee taxes, value Stock Issued under Equity Plans, net of shares forfeited, canceled, or withheld for employee taxes, value Stock Issued under Equity Plans, net of shares forfeited, canceled, or withheld for employee taxes, value Exercise of Warrants, Effect on Equity Exercise of Warrants, Effect on Equity Exercise of Warrants, Effect on Equity Amortization of stock compensation and employee stock purchase plan Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Other equity adjustments Stockholders' Equity, Other Ending Balance Financing Receivable, Recorded Investment, Aging [Abstract] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 1 to 29 Days Past Due [Member] Financing Receivables, 1 to 29 Days Past Due [Member] Financing Receivables, 30 to 89 Days Past Due [Member] Financing Receivables, 30 to 89 Days Past Due [Member] Financing Receivables that are more than 29 days past due but fewer than 90 days past due. Financing Receivables, Equal to Greater than 90 Days Past Due [Member] 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] Financing Receivable, Recorded Investment, Past Due Financing Receivable, Recorded Investment, Past Due Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Financing Receivable, Recorded Investment, Current Financing Receivable, Recorded Investment, Current Total loans Loans and Leases Receivable, Net of Deferred Income Consolidated Balance Sheet [Abstract] Consolidated Balance Sheet [Abstract] Scenario [Axis] Scenario, Unspecified [Domain] Assets: Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investment securities available-for-sale (amortized cost of $1,109,785 and $1,182,427 at June 30, 2018 and December 31, 2017, respectively) Available-for-sale Securities Investment securities held-to-maturity (fair value of $76,747 and $73,781 at June 30, 2018 and December 31, 2017, respectively) Debt Securities, Held-to-maturity Stock in Federal Home Loan Bank and Federal Reserve Bank Federal Home Loan Bank Stock and Federal Reserve Bank Stock Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Other Total loans Less: Allowance for loan losses Loans and Leases Receivable, Allowance Net loans Loans and Leases Receivable, Net Amount Other real estate owned (“OREO”) Other Real Estate, Foreclosed Assets, and Repossessed Assets Premises and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Fees receivable Accrued Fees and Other Revenue Receivable Accrued interest receivable Financing Receivable, Gross Deferred income taxes, net Deferred Tax Assets, Net Other assets Other Assets Total assets Assets Liabilities: Liabilities [Abstract] Deposits Deposits Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Federal funds purchased Federal Funds Purchased Federal Home Loan Bank borrowings Long-term Federal Home Loan Bank Advances Junior subordinated debentures Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Other liabilities Other Liabilities Total liabilities Liabilities Stockholders’ Equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $1.00 par value; authorized: 2,000,000 shares; Series D, 6.95% Non-Cumulative Perpetual, issued and outstanding: zero shares at June 30, 2018 and 50,000 shares at December 31, 2017; liquidation preference: $1,000 per share Preferred Stock, Value, Issued Common stock, $1.00 par value; authorized: 170,000,000 shares; issued and outstanding: 84,478,858 shares at June 30, 2018 and 84,208,538 shares at December 31, 2017 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income/ (loss) Total Company's shareholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interests Total shareholders' equity Total liabilities, redeemable noncontrolling interests and shareholders’ equity Liabilities and Equity Income Tax Disclosure [Abstract] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Restructuring and Related Activities Disclosure [Text Block] Restructuring and Related Activities Disclosure [Text Block] Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Individually Evaluated for Impairment Financing Receivable, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Loans and Leases Receivable, Net of Deferred Income Loans and Leases Receivable, Allowance Available-for-sale Securities, Debt Maturities [Abstract] Investment [Table] Investment [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Investment securities available for sale at amortized cost Available-for-sale Securities, Amortized Cost Basis Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Available-for-sale Securities Realized Investment Gains (Losses) [Abstract] Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Gain (Loss) on Investments by Category [Axis] Debt Security Category [Axis] Gain (Loss) on Investments, Including Marketable Securities and Investments Held at Cost, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] Cumulative Effect of New Accounting Principle in Period of Adoption Proceeds from Sale of Available-for-sale Securities Proceeds from Sale of Available-for-sale Securities Available-for-sale Securities, Gross Realized Gains Available-for-sale Securities, Gross Realized Gains Available-for-sale Securities, Gross Realized Losses Available-for-sale Securities, Gross Realized Losses Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax Comprehensive Income (Loss) Note [Text Block] Comprehensive Income (Loss) Note [Text Block] Allowance for Loan Losses [Abstract] Allowance for Loan Losses [Abstract] Allowance for Credit Losses on Financing Receivables [Table Text Block] Allowance for Credit Losses on Financing Receivables [Table Text Block] Basis of Presentation and Summary of Significant Accounting Policies [Abstract] Basis of Presentation and Summary of Significant Accounting Policies [Abstract] Basis of Presentation and Significant Accounting Policies [Text Block] Basis of Presentation and Significant Accounting Policies [Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] Financial Asset Acquired with Credit Deterioration [Member] Financial Asset Acquired with Credit Deterioration [Member] Noncontrolling Interest Disclosure [Text Block] Noncontrolling Interest Disclosure [Text Block] Effective Income Tax Rate Reconciliation, Percent Income tax expense Income Tax Expense (Benefit) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Income tax expense/ (benefit) related to sale of affiliate Income tax expense/ (benefit) related to sale of affiliate Income tax expense/ (benefit) related to sale of affiliate Balance Sheet Parenthetical [Abstract] Balance Sheet Parenthetical [Abstract] Investment securities available-for-sale at amortized cost Investment securities held-to-maturity at fair value Debt Securities, Held-to-maturity, Fair Value Preferred Stock, Par or Stated Value Per Share Preferred Stock, Par or Stated Value Per Share Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Preferred Stock, Shares Issued Preferred Stock, Shares Issued Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference Per Share Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized Common Stock, Shares Authorized Common Stock, Shares, Issued Common Stock, Shares, Issued Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] US Government and Government Agencies and Authorities [Member] US Treasury and Government [Member] US Government-sponsored Enterprises Debt Securities [Member] US Government-sponsored Enterprises Debt Securities [Member] Municipal Bonds [Member] Municipal Bonds [Member] Mortgage Backed Securities, Other [Member] Mortgage Backed Securities, Other [Member] Other Aggregated Investments [Member] Other Security Investments [Member] Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivatives, Fair Value, by Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Assets [Member] Other Assets [Member] Other Liabilities [Member] Other Liabilities [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative Asset, Fair Value, Gross Asset Derivative Asset, Fair Value, Gross Asset Derivative Liability, Fair Value, Gross Liability Derivative Liability, Fair Value, Gross Liability Net Income (Loss) Attributable to Noncontrolling Interest Redeemable Noncontrolling Interest, Equity, Carrying Amount Derivative, Collateral, Obligation to Return Cash Derivative, Collateral, Obligation to Return Cash Derivative, Collateral, Right to Reclaim Securities Derivative, Collateral, Right to Reclaim Securities Income Tax Expense Components [Table] Income Tax Expense Components [Table] Income Tax Expense Components [Table] - Income tax expense and rate related to various income items including income from continuing and discontinued operations, income attributable to noncontrolling interests and total net income attributable to the Company Income Tax Expense Components [Axis] Income Tax Expense Components [Axis] Income Tax Expense Components [Axis] Income Tax Expense Components [Domain] Income Tax Expense Components [Domain] Income Tax Expense Components Income Tax Expense Components [Line Items] Income Tax Expense Components [Line Items] Income Tax Expense Components [Line Items] Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Effective Income Tax Rate, Continuing Operations Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Discontinued Operation, Tax Effect of Discontinued Operation Discontinued Operation, Tax Effect of Discontinued Operation Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Effective Tax Rate Discontinued Operations Effective Tax Rate Discontinued Operations Effective Tax Rate Discontinued Operations - A ratio calculated by dividing the reported amount of income tax expense attributable to discontinued operations for the period by GAAP-basis pretax income from discontinued operations. Tax effect Attributable to Noncontrolling Interests Tax Effect Attributable to Noncontrolling Interests Tax Effect Attributable to Noncontrolling Interests - Tax Expense (Benefit) Effective Tax Rate Noncontrolling Interests Effective Tax Rate Noncontrolling Interests Effective Tax Rate Noncontrolling Interests - A ratio calculated by dividing the reported amount of income tax expense attributable to noncontrolling interests for the period by GAAP-basis pretax income from noncontrolling interests. Income from Continuing and Discontinued Operations Attributable to Parent Before Tax income from continuing and discontinued operations attributable to parent before tax income from continuing and discontinued operations attributable to parent before tax Tax Expense (Benefit) Total Tax Expense (Benefit) Total tax expense (benefit) total - The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing and discontinued operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy. Net income attributable to the Company Effective Tax Rate Total Effective Tax Rate Total Effective Tax Rate Total - A ratio calculated by dividing the reported amount of income tax expense attributable to the parent for the period by GAAP-basis pretax income attributable to the parent. Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Investment Managers Segment [Member] Investment Managers Segment [Member] Investment Managers Segment [Member] Wealth Advisors Segment [Member] Wealth Advisors Segment [Member] Wealth Advisors Segment [Member] Holding Company and Eliminations Segment [Member] Holding Company and Eliminations Segment [Member] Holding Company and Eliminations Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Interest Income (Expense), Net Interest Income (Expense), Net Total fees and other income Noninterest Income Revenues Revenues Provision/ (credit) for loan losses Provision for Loan and Lease Losses Noninterest Expense Noninterest Expense Income before income taxes Net income attributable to the Company Total assets Amortization of intangibles Amortization of Intangible Assets Depreciation Depreciation Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Securities Excluded Due to Exercise Price Exceeding Average Price During Period [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Outstanding Stock Awards [Member] Stock Compensation Plan [Member] Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items] Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items] Shares Excluded from EPS Calculation Due to Exercise Price Exceeding Average Price During Period [Line Items] Shares Excluded Due to Exercise Price Exceeding Average Price During Period Shares Excluded Due to Exercise Price Exceeding Average Price During Period Shares Excluded from EPS Calculation Due to Exercise Price Exceeding Average Price During Period Consolidated Statement of Cash Flows [Abstract] Consolidated Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to arrive at net income from continuing operations [Abstract] Adjustments to arrive at net income from continuing operations [Abstract] Adjustments to arrive at net income from continuing operations from net income attributable to the Company Net income attributable to noncontrolling interests Less: Net income from discontinued operations Adjustments to reconcile net income from continuing operations to net cash provided by/(used in) 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 compensation, net of cancellations Share-based Compensation Loans originated for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sale of loans held for sale Proceeds from Sale of Loans Held-for-sale Deferred income tax expense/ (benefit) Deferred Income Tax Expense (Benefit) Net decrease/ (increase) in other operating activities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by/ (used in) operating activities of continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by/ (used in) operating activities of discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided by/ (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Investment securities available for sale: Payments for (Proceeds from) Investments [Abstract] Purchases Payments to Acquire Available-for-sale Securities Sales Maturities, calls, redemptions, and principal payments Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases Payments to Acquire Held-to-maturity Securities Principal payments Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities (Investments)/ distributions in trusts, net Payments for (Proceeds from) Other Interest Earning Assets Purchase of additional Bank Owned Life Insurance (BOLI) Payments for (Proceeds from) Life Insurance Policies (Purchase)/ redemption of Federal Home Loan Bank and Federal Reserve Bank stock Payments for (Proceeds from) Federal Home Loan Bank Stock Net (increase)/ decrease in portfolio loans Payments for (Proceeds from) Loans and Leases Proceeds from recoveries of loans previously charged-off Proceeds from Recoveries of Loans Previously Charged off Proceeds from sale of OREO Proceeds from Sale of Foreclosed Assets Capital expenditures, net of sale proceeds Payments to Acquire Property, Plant, and Equipment Proceeds from sale of affiliate Proceeds from Divestiture of Interest in Subsidiaries and Affiliates Net cash provided by/ (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 increase/ (decrease) in deposits Increase (Decrease) in Deposits Net increase/ (decrease) in securities sold under agreements to repurchase Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase Net increase/ (decrease) in federal funds purchased Increase (Decrease) in Federal Funds Purchased Net increase/ (decrease) in short-term Federal Home Loan Bank borrowings Proceeds from (Repayments of) Short-term Debt Advances of long-term Federal Home Loan Bank borrowings Proceeds from FHLBank Borrowings, Financing Activities Repayments of long-term Federal Home Loan Bank borrowings Payments of FHLBank Borrowings, Financing Activities Payments for redemption of Series D preferred stock Payments for Repurchase of Preferred Stock and Preference Stock Dividends paid to common shareholders Payments of Ordinary Dividends, Common Stock Dividends paid to preferred shareholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Proceeds from warrant exercises Proceeds from Warrant Exercises Proceeds from stock option exercises Proceeds from Stock Options Exercised Proceeds from issuance of common stock, net Proceeds from Issuance of Common Stock Distributions paid to noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Other equity adjustments Proceeds from (Payments for) Other Financing Activities Net cash provided by/ (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase/ (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Supplementary schedule of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Cash paid for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Cash paid for income taxes, (net of refunds received) Income Taxes Paid, Net Change in unrealized gain/ (loss) on available-for-sale securities, net of tax Change in unrealized gain/ (loss) on cash flow hedges, net of tax Change in unrealized gain/ (loss) on other, net of tax Loans transferred into other real estate owned from loan portfolio Real Estate Owned, Transfer from Real Estate Owned Loans charged-off Financing Receivable, Allowance for Credit Losses, Write-downs Derivative Instruments, Gain (Loss) [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest Expense [Member] Interest Expense [Member] Gain (Loss) on Derivative Instruments, Net, Pretax Gain (Loss) on Derivative Instruments, Net, Pretax Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Rollforward of Redeemable Noncontrolling Interests [Table] Rollforward of Redeemable Noncontrolling Interests [Table] - presents a rollforward of activity in the redeemable noncontrolling interests from beginning to end of periods presented Redeemable Noncontrolling Interest [Member] Redeemable Noncontrolling Interest [Member] Redeemable Noncontrolling Interest [Member] Redeemable noncontrolling interests at beginning of period Nonredeemable Noncontrolling Interest at beginning of period Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Amortization of Noncontrolling Interest Equity Compensation Amortization of Noncontrolling Interest Equity Compensation Amortization of Noncontrolling Interest Equity Compensation Noncontrolling Interest, adjustment to fair value Noncontrolling Interest, Period Increase (Decrease) Redeemable noncontrolling interests at end of period Nonredeemable Noncontrolling Interest at end of period Revenue Recognition [Abstract] Revenue Recognition, Deferred Revenue [Policy Text Block] Revenue Recognition, Deferred Revenue [Policy Text Block] Effect of Derivative Instruments on Statement of Operations [Abstract] Effect of Derivative Instruments on Statement of Operations [Abstract] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Income Statement and Other Comprehensive Income (Loss) Location [Domain] Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Derivative Assets Derivative Asset Alternative Investment Alternative Investment Derivative Financial Instruments, Liabilities, Fair Value Disclosure Derivative Liability Financial and Nonfinancial Liabilities, Fair Value Disclosure Financial and Nonfinancial Liabilities, Fair Value Disclosure Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Reported Value Measurement [Member] Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and Cash Equivalents, Fair Value Disclosure Cash and Cash Equivalents, Fair Value Disclosure Debt Securities, Held-to-maturity, Fair Value Loans Held-for-sale, Fair Value Disclosure Loans Held-for-sale, Fair Value Disclosure Other Assets, Fair Value Disclosure Other Assets, Fair Value Disclosure Deposits, Fair Value Disclosure Deposits, Fair Value Disclosure Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Federal Funds Purchased, Fair Value Disclosure Federal Funds Purchased, Fair Value Disclosure Federal Home Loan Bank Borrowings, Fair Value Disclosure Federal Home Loan Bank Borrowings, Fair Value Disclosure Subordinated Debt Obligations, Fair Value Disclosure Subordinated Debt Obligations, Fair Value Disclosure Other Liabilities, Fair Value Disclosure Other Liabilities, Fair Value Disclosure Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block] Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Derivatives Not Designated as Hedging Instruments [Table Text Block] Derivatives Not Designated as Hedging Instruments [Table Text Block] Fair Value Disclosures [Text Block] Fair Value Disclosures [Text Block] Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Net income from continuing operations attributable to common shareholders, after assumed dilution Net Income (Loss) from Continuing Operations Available to Common Stockholders, Diluted Net Income (Loss) from Continuing Operations Available to Common Stockholders, Diluted Net income attributable to common shareholders, after assumed dilution Net Income (Loss) Available to Common Stockholders, Diluted Stock options, performance-based and time-based restricted stock, and performance-based and time-based restricted stock units, and other dilutive securities (3) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Warrants to purchase common stock (3) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Weighted Average Number Diluted Shares Outstanding Adjustment Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average diluted common shares outstanding (3) Weighted Average Number of Shares Outstanding, Diluted Income (Loss) from Continuing Operations, Per Diluted Share Income (Loss) from Continuing Operations, Per Diluted Share Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Earnings Per Share, Diluted Earnings Per Share, Diluted New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [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 [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Hedges related to deposits [Member] Hedges related to deposits [Member] Hedges related to deposits [Member] Gain (Loss) on Investments [Member] Gain (Loss) on Investments [Member] Income Tax Expense [Member] Income Tax Expense [Member] Income Tax Expense [Member] Other Income [Member] Other Income [Member] Net Income Attributable to the Company [Member] Net Income Attributable to the Company [Member] Net Income Attributable to the Company [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Class of Financing Receivable [Axis] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Consolidated Statement of Operations [Abstract] Consolidated Statement of Operations [Abstract] Other Banking Fee Income [Member] Other Banking Fee Income [Member] Other Banking Fee Income [Member] Interest and dividend income: Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Taxable investment securities Interest Income, Securities, Operating, Taxable Non-taxable investment securities Interest Income, Securities, Operating, Tax Exempt Mortgage-backed securities Interest Income, Securities, Mortgage Backed Short-term investments and other Other Interest and Dividend Income Total interest and dividend income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Federal Home Loan Bank borrowings Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Junior subordinated debentures Interest Expense, Junior Subordinated Debentures Repurchase agreements and other short-term borrowings Interest Expense, Short-term Borrowings Total interest expense Interest Expense Net interest income Net interest income after provision/ (credit) for loan losses Interest Income (Expense), after Provision for Loan Loss Fees and other income: Noninterest Income [Abstract] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Gain on sale of loans, net Gain (Loss) on Sales of Loans, Net Gain/ (loss) on sale of investments, net Debt and Equity Securities, Gain (Loss) Gain/ (loss) on OREO, net Gains (Losses) on Sales of Other Real Estate Other Noninterest Income, Other Operating Income Operating expense: Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy and equipment Occupancy, Net Professional services Professional Fees Marketing and business development Marketing and Advertising Expense Information systems Information Technology and Data Processing Amortization of intangibles FDIC insurance Federal Deposit Insurance Corporation Premium Expense Other Other Noninterest Expense Total operating expense Net income from continuing operations Net income/ (loss) from discontinued operations Net income before attribution to noncontrolling interests Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interests Adjustments to net income attributable to the Company to arrive at net income attributable to common shareholders Other Preferred Stock Dividends and Adjustments Basic earnings per share attributable to common shareholders: From continuing operations: From discontinued operations: Total attributable to common shareholders: Weighted average basic common shares outstanding Diluted earnings per share attributable to common shareholders: Earnings Per Share, Diluted [Abstract] From continuing operations: From discontinued operations: Total attributable to common shareholders: Weighted average diluted common shares outstanding Impaired Loans With and Without Related Allowance [Abstract] Impaired Loans With and Without Related Allowance [Abstract] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired Financing Receivable, Recorded Investment Impaired Financing Receivable, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, 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, Interest Income, Cash Basis Method Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method Impaired Financing Receivable, Interest Income, Cash Basis Method Impaired Financing Receivable, Interest Income, Cash Basis Method Number of Reportable Segments Number of Reportable Segments Loan Participation Amounts by Loan Type [Table] Loan Participation Amounts by Loan Type [Table] Loan Participation Amounts by Loan Type [Table] Loan Participation Amounts by Loan Type [Line Items] Loan Participation Amounts by Loan Type [Line Items] [Line Items] for Loan Participation Amounts by Loan Type [Table] Loan Participation Serviced for Others Amount Loan Participation Serviced for Others Amount Loan participations serviced for others and loans serviced for others are not included in the Company's total loans. Loan Serviced for Others Amount Loan Serviced for Others Amount Loan Serviced for Others Amount Fair Value Measurement Inputs and Valuation Techniques [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value by Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Asset Class [Domain] Loans Receivable [Member] Loans Receivable [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value, non-recurring basis, weighted average unobservable input Fair Value, non-recurring basis, weighted average discount rate Fair Value, non-recurring basis, weighted average discount rate Fair Value, non-recurring basis, weighted average appraisal adjustment Fair Value, non-recurring basis, weighted average appraisal adjustment Fair Value, non-recurring basis, weighted average appraisal adjustment Fair Value, non-recurring basis, weighted average min discount rate Fair Value, non-recurring basis, weighted average min discount rate Fair Value, non-recurring basis, weighted average discount rate, min Fair Value, non-recurring basis, weighted average max discount rate Fair Value, non-recurring basis, weighted average max discount rate Fair Value, non-recurring basis, weighted average discount rate, max Fair Value, non-recurring basis, appraisal adj min rate Fair Value, non-recurring basis, appraisal adj min rate Fair Value, non-recurring basis, appraisal adj min rate Fair Value, non-recurring basis, appraisal adj max rate Fair Value, non-recurring basis, appraisal adj max rate Fair Value, non-recurring basis, appraisal adj max rate Financing Receivables [Text Block] Financing Receivables [Text Block] Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Realized Gain (Loss) on Investments [Table Text Block] Realized Gain (Loss) on Investments [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Accounting Standards Update 2017-07 [Member] Accounting Standards Update 2017-07 [Member] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Prior Period Reclassification Adjustment Prior Period Reclassification Adjustment Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Segment Reporting Disclosure [Text Block] Segment Reporting Disclosure [Text 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Securities, Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale securities at fair value Debt Securities, Held-to-maturity Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Earnings Per Share [Text Block] Earnings Per Share [Text Block] Disposal Group, Including Discontinued Operation, Assets, Current Disposal Group, Including Discontinued Operation, Assets, Current Disposal Group, Including Discontinued Operation, Liabilities, Current Disposal Group, Including Discontinued Operation, Liabilities, Current Allowance for Credit Losses [Text Block] Allowance for Credit Losses [Text 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after 10 Years, Amortized Cost Debt Securities, Held-to-maturity Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Debt Securities, Held-to-maturity, Fair Value