Document and Entity Information Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Common Class A [Member] Common Class A Series C Preferred Stock [Member] Series C Preferred Stock Series D Preferred Stock [Member] Series D Preferred Stock Series E Preferred Stock [Member] Series E Preferred Stock Document Information [Line Items] Document Information Document Type Document Quarterly Report Document Period End Date Document Fiscal Year Focus Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Period Focus Amendment Flag Condensed Consolidated Balance Sheets Statement [Table] Represents 6% Fixed-to-Floating Rate Series C Non-Cumulative Perpetual Preferred Stock, without par value (the "Series C Preferred Stock"). 6% Series C Preferred Stock 6% Series C Preferred Stock Represents 8.25% Fixed-to-Floating Rate Series D Non-Cumulative Perpetual Preferred Stock, without par value (the "Series D Preferred Stock"). 8.25% Series D Preferred Stock 8.25% Series D Preferred Stock Represents 7.625% Fixed Rate Reset Series E Non-Cumulative Perpetual Preferred Stock, without par value (the "Series E Preferred Stock"). Preferred Stock Series E 7.625 Percent [Member] 7.625% Series E Preferred Stock Statement [Line Items] Assets [Abstract] Assets Cash and Due from Banks Cash and due from banks Interest-Bearing Deposits in Banks and Other Financial Institutions Interest-earning demand accounts Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash and Cash Equivalents, End of Period Cash and Cash Equivalents, Beginning of Period Cash and cash equivalents Securities Purchased under Agreements to Resell Securities purchased under agreements to resell Debt Securities, Trading, and Equity Securities, FV-NI Mortgage loans in process of securitization Mortgage loans in process of securitization Debt Securities, Available-for-Sale, Excluding Accrued Interest Securities available for sale (includes $550,207 and $571,314 at fair value) Total Securities available for sale Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Securities held to maturity (fair value of $1,426,444 and $1,543,554) Amortized Cost Amortized Cost Federal Home Loan Bank Stock Federal Home Loan Bank (FHLB) stock and other equity securities Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Loans held for sale (includes $163,426 and $76,980 at fair value) Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Loans receivable (includes $46,427 and $47,318 at fair value), net of allowance for credit losses on loans of $76,831 and $83,301 Loans Receivable, net Property, Plant and Equipment, Net Premises and equipment, net Servicing Asset at Fair Value, Amount Servicing rights Servicing rights Interest Receivable Interest receivable Goodwill Goodwill Other Real Estate Other real estate owned Amount of other assets and receivables. Other Assets and Receivables. Other assets and receivables Assets Total assets Total assets Liabilities and Equity [Abstract] Liabilities and Shareholders' Equity Liabilities [Abstract] Liabilities Deposits, Interest-Bearing and Noninterest-Bearing, Alternative [Abstract] Deposits Noninterest-Bearing Deposit Liabilities Noninterest-bearing Core demand deposits Interest-Bearing Deposit Liabilities Interest-bearing Total interest-bearing deposits Deposits. Total deposits Debt, Long-Term and Short-Term, Combined Amount Total borrowings Borrowings The amount of deferred and current tax liabilities. Deferred and Current Tax Liabilities, Net Deferred and current tax liabilities, net Other Liabilities Other liabilities Liabilities Liabilities for VIEs Total liabilities Commitments and Contingencies Commitments and Contingencies Equity, Attributable to Parent [Abstract] Shareholders' Equity Common Stock, Value, Issued Common stock, without par value Authorized - 75,000,000 shares Issued and outstanding - 45,935,408 and 45,893,172 shares Preferred Stock, Value, Issued Preferred stock Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Equity, Attributable to Parent Balance end of period Balance beginning of period Total shareholders' equity Liabilities and Equity Total liabilities and shareholders' equity Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Securities available for sale Debt Securities, Held-to-Maturity, Fair Value Securities held to maturity Securities held to maturity, fair value Fair Value Loan, Held-for-Sale, Fair Value Disclosure Loans held for sale Loans held for sale at fair value Loans Receivable, Fair Value Disclosure Loans receivable, net Loan receivable includes at fair value Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Balance, end of period Balance, beginning of period ACL-Loans Net of allowance for credit losses on loans Stockholders' Equity, Number of Shares, Par Value and Other Disclosure [Abstract] Stockholders' Equity Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Preferred Stock, Dividend Rate, Percentage Preferred stock, dividend rate (as a percent) Preferred Stock, Liquidation Preference Per Share Preferred stock liquidation preference (in dollars 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 Number of preferred stock depository shares held by the entity as at the end of the reporting period. Preferred Stock Depository Shares Depositary shares Condensed Consolidated Statements of Income Interest and Dividend Income, Operating [Abstract] Interest Income Interest and Fee Income, Loans and Leases Loans Interest Income, Debt Securities, Trading, Operating Mortgage loans in process of securitization Interest and Dividend Income, Securities, by Classification [Abstract] Investment securities: Amount of interest income, amortization of premium and accretion of discount on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale); classified as operating, subject to state, federal and other income tax. Interest Income, Debt Securities, Available-for-sale, Operating, Taxable Available for sale Interest Income, Debt Securities, Held-to-Maturity Held to maturity Amount of interest income from Federal Home Loan Bank (FHLBank) advances to member financial institutions and dividend income from other equity securities. Interest Income From Federal Home Loan Bank Advances And Other Equity Securities Dividends FHLB stock and other equity securities (dividends) Interest Income, Other Other Interest and Dividend Income, Operating Total interest income Interest income Interest Expense, Operating [Abstract] Interest Expense Interest Expense, Deposits Deposits Interest Expense, Short-Term Borrowings Short-term borrowings Interest Expense, Long-Term Debt Long-term borrowings Interest Expense, Operating Interest expense Total interest expense Interest Income (Expense), Operating Net Interest Income Provision for Loan, Lease, and Other Losses Provision for credit losses Provision for credit losses Interest Income (Expense), after Provision for Loan Loss Net Interest Income After Provision for Credit Losses Noninterest Income [Abstract] Noninterest Income Gain (Loss) on Sales of Loans, Net Gain on sale of loans Gain on sale of loans Amount of fees from providing shareholder services, including, but not limited to, answering shareholder inquiries and providing shareholders with information about their investments. Servicing Fees, Amount Loan servicing fees, net Fees and Commissions, Mortgage Banking and Servicing Mortgage warehouse fees Amount of syndication and asset management fees. Syndication and Asset Management Fees Syndication and asset management fees Noninterest Income, Other Other income Noninterest Income Total noninterest income Noninterest income Noninterest Expense [Abstract] Noninterest Expense Labor and Related Expense Salaries and employee benefits Loan Portfolio Expense Loan expense Occupancy, Net Occupancy and equipment Professional Fees Professional fees Federal Deposit Insurance Corporation Premium Expense Deposit insurance expense Communications and Information Technology Technology expense Amount of premium expense for credit risk transfer. Credit Risk Transfer, Premium Expense Credit risk transfer premium expense Other Noninterest Expense Other expense Noninterest Expense Total noninterest expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income Before Income Taxes Income Tax Expense (Benefit) Income taxes Provision for income taxes Net Income Net Income Preferred Stock Dividends, Income Statement Impact Dividends on preferred stock Preferred Stock Redemption Premium Impact of preferred stock redemption Net Income (Loss) Available to Common Stockholders, Basic Net Income Allocated to Common Shareholders Earnings Per Share, Basic Basic Earnings Per Share (in dollars per share) Basic earnings per share Earnings Per Share, Diluted Diluted Earnings Per Share (in dollars per share) Diluted earnings per share Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted-Average Shares Weighted-Average Shares Outstanding Weighted Average Number of Shares Outstanding, Basic Weighted average shares - Basic Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average shares - diluted Diluted (in shares) Condensed Consolidated Statements of Comprehensive Income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other Comprehensive Income: OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Net unrealized (losses) gains on investment securities available for sale, net of tax benefit (expense) of $241 and $(17) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive (loss) income Other comprehensive (loss) income for the period Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Net of tax benefit (expense) on net change in unrealized gains/(losses) on investment securities available for sale Condensed Consolidated Statement of Shareholders' Equity Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Preferred Stock [Member] Preferred Stock Retained Earnings [Member] Retained Earnings AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Loss Represents 6% Fixed-to-Floating Rate Series B Non-Cumulative Perpetual Preferred Stock, without par value (the "Series B Preferred Stock"). 6% Series B Preferred Stock 6% Series B Preferred Stock Increase (Decrease) in Stockholders' Equity [Roll Forward] Consolidated Statements of Shareholders' Equity Shares, Outstanding Balance end of period (in shares) Balance beginning of period (in shares) Stock Issued During Period, Value, Employee Stock Ownership Plan Distribution to employee stock ownership plan Stock Issued During Period, Shares, Employee Stock Ownership Plan Distribution to employee stock ownership plan (in shares) The net value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). Stock Issued During Period, Value, Share-Based Compensation, Net Shares issued for stock compensation plans, net of taxes withheld to satisfy tax obligations Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture Shares issued for stock compensation plans, net of taxes withheld to satisfy tax obligations (in shares) Stock Redeemed or Called During Period, Value Redemption of preferred stock Stock Redeemed or Called During Period, Shares Redemption of preferred stock (in shares) Amount of paid and unpaid 6 Percent Series C preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). Dividends 6 Percent, Series C Preferred Stock Dividends on 6% Series C preferred stock, $60.00 per share, annually Amount of paid and unpaid 8.25 percent Series D preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). Dividends 8.25 Percent Series D Preferred Stock Dividends on 8.25% Series D preferred stock, $82.50 per share, annually Amount of paid and unpaid 7.625 percent preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). Dividends 7.625 Percent Series E Preferred Stock Dividends on 7.625% Series E preferred stock, $76.25 per share, annually Dividends, Common Stock Dividends on common stock, $0.44 per share, annually in 2026 and $0.40 per share, annually in 2025 Equity impact of the value of preferred stock that has been redeemed on excise of tax. Excise tax on preferred stock redemption Excise tax on preferred stock redemption Excise tax on preferred stock redemption Stock Repurchased and Retired During Period, Value Repurchase of common stock Stock Repurchased and Retired During Period, Shares Repurchase of common stock (in shares) Preferred Stock, Dividends Per Share, Declared Dividends on preferred stock per share Common Stock, Dividends, Per Share, Declared Dividends on common stock per share Payments of Stock Issuance Costs Offering costs Condensed Consolidated Statements of Cash Flows (Unaudited) Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Depreciation Depreciation The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization and principal collected. Proceeds from Sale, Loan, Held-for-Sale And Principal Collected Proceeds from sold loans and principal collected Payment for Origination and Purchase, Loan, Held-for-Sale Loans and participations originated and purchased for sale The amount of cash inflow from low income housing tax credits. Proceeds from Sale of Low Income Tax Credit Proceeds from sale of low-income housing tax credits The amount of cash outflow for acquiring low housing tax credits for sale. Payments to Acquire Low Income Housing Tax Credit for Sale Purchases of low-income housing tax credits for sale Represents the cash payments made to acquire transferable energy production tax credits. Payments To Acquire Transferable Energy Tax Credits Purchases of other tax credits Payments to acquire transferable energy production tax credits The amortization of mortgage servicing rights and fair value adjustments. Amortization of Mortgage Servicing Rights and Fair Value Adjustments Change in servicing rights for paydowns and fair value adjustments Increase (Decrease) in Operating Capital [Abstract] Net change in: Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Mortgage loans in process of securitization Increase (Decrease) in Other Operating Assets Other assets and receivables Increase (Decrease) in Other Operating Liabilities Other liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Other Net Cash Provided by (Used in) Operating Activities Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities: Proceeds from (Payments for) Securities Purchased under Agreements to Resell Net change in securities purchased under agreements to resell Payments to Acquire Debt Securities, Available-for-Sale Purchases of securities available for sale Other real estate owned Purchases of mortgage servicing rights Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Proceeds from calls, maturities and paydowns of securities available for sale Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Proceeds from calls, maturities and paydowns of securities held to maturity Payment for Acquisition, Loan, Held-for-Investment Purchases of loans Purchase of loans Payments to Acquire Loans Receivable Net change in loans receivable