Document and Entity Information Statement [Table] Statement [Line Items] Statement Document Type Document Quarterly Report Document Transition Report Document Period End Date Entity 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 Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Central Index Key Amendment Flag Consolidated Balance Sheets Assets [Abstract] Assets Cash and Due from Banks Cash and due from banks Cash and due from banks Interest-bearing Deposits in Banks and Other Financial Institutions Interest earning deposits with financial institutions Cash, Cash Equivalents, and Federal Funds Sold Cash and cash equivalents Debt Securities, Available-for-sale Fair Value Fair Value Debt Securities, Available-for-sale, Total Securities available-for-sale, at fair value Federal Home Loan Bank Stock and Federal Reserve Bank Stock Federal Home Loan Bank of Chicago ("FHLBC") and Federal Reserve Bank of Chicago ("FRBC") stock FHLBC and FRBC Stock Loans Held-For-Sale, Other, not Part of Disposal Group or Discontinued Operation Loans held-for-sale Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable and net investment in lease. Financing Receivable And Net Investment In Lease Excluding Accrued Interest Before Allowance For Credit Loss Total Loans Total Loans Total Loans Loans Amount excluding accrued interest, of allowance for credit loss on financing receivable and net investment in lease. Financing Receivable And Net Investment In Lease Allowance For Credit Loss Excluding Accrued Interest Allowance for credit losses Financing Receivable, Allowance for Credit Loss, Ending Balance Financing Receivable, Allowance for Credit Loss, Beginning Balance Less: allowance for credit losses on loans ACL Allocation Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable and net investment in lease. Financing Receivable And Net Investment In Lease Excluding Accrued Interest After Allowance For Credit Loss Total loans, including deferred loan loan costs and PCI Net loans Property, Plant and Equipment, Net Premises and equipment, net Real Estate Acquired Through Foreclosure Balance at end of period Balance at beginning of period Other real estate owned, net Carrying value of other real estate owned Servicing Asset at Fair Value, Amount Mortgage servicing rights, fair value Mortgage servicing rights, at fair value Mortgage servicing rights Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Core deposit intangible ("CDI") Bank Owned Life Insurance Bank-owned life insurance ("BOLI") Deferred Income Tax Assets, Net Deferred tax assets, net Other Assets. Other assets Assets Total assets Liabilities [Abstract] Liabilities Deposits [Abstract] Deposits: Noninterest-bearing Deposit Liabilities Noninterest bearing demand Noninterest bearing deposits Interest-bearing Deposit Liabilities [Abstract] Interest bearing: Interest-bearing Deposit Liabilities, Domestic Savings, NOW, and money market Time Deposits Time Deposits. Total deposits Securities Sold under Agreements to Repurchase Securities sold under repurchase agreements Other Short-term Borrowings Other short-term borrowings Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Junior subordinated debentures Subordinated Debt. Subordinated debentures Notes and Loans Payable Notes payable and other borrowings Other Liabilities Other liabilities Liabilities Total liabilities Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Common Stock, Value, Issued Common stock Additional Paid in Capital. Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss, net Treasury Stock, Common, Value Treasury stock Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Common Stock, Par or Stated Value Per Share Common stock, Par value (in dollars per share) Common Stock, Shares Authorized Common stock, Shares authorized Common Stock, Shares, Issued Common stock, Shares issued Common Stock, Shares, Outstanding Balance (in shares) Balance (in shares) Common stock, Shares outstanding Treasury Stock, Common, Shares Treasury stock, Shares Consolidated Statements of Income Product and Service [Axis] Product and Service [Domain] Wealth management Service charges on deposits Secondary mortgage fees Mortgage servicing income. Mortgage servicing income Interest and Dividend Income, Operating [Abstract] Interest and dividend income Interest and Fee Income, Loans and Leases Held-in-portfolio Loans, including fees Interest and Fee Income, Loans Held-for-sale, Mortgages Loans held-for-sale Interest and Dividend Income, Securities, by Taxable Status [Abstract] Securities: Interest Income, Securities, Operating, Taxable Taxable Interest Income, Securities, Operating, Tax Exempt Tax exempt Dividend Income, Operating Dividends from FHLBC and FRBC stock Interest Income, Deposits with Financial Institutions Interest bearing deposits with financial institutions Interest and Dividend Income, Operating Total interest and dividend income Interest Expense [Abstract] Interest expense Interest Expense, NOW Accounts, Money Market Accounts, and Savings Deposits Savings, NOW, and money market deposits Interest Expense, Time Deposits Time deposits Interest Expense, Securities Sold under Agreements to Repurchase Securities sold under repurchase agreements Interest Expense, Other Short-term Borrowings Other short-term borrowings Interest Expense, Junior Subordinated Debentures Junior subordinated debentures Interest Expense, Subordinated Notes and Debentures Subordinated debentures Amount of interest expense incurred on notes payable and other borrowings. Interest Expense, Notes Payable and Loans Payable Notes payable and other borrowings Interest Expense, Operating Total interest expense Interest Income (Expense), Net Net interest and dividend 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 and dividend income after provision for credit losses Noninterest Income [Abstract] Noninterest income Fees and Commissions, Depositor Accounts Service charges on deposits Mortgage Servicing Rights (MSR) Impairment (Recovery) Mortgage servicing rights mark to market loss Mortgage servicing rights mark to market loss Gain (Loss) on Sale of Mortgage Loans Net gains on sales of mortgage loans Net gain on sales of mortgage loans Life Insurance, Corporate or Bank Owned, Change in Value Net change in cash surrender value of BOLI Change in cash surrender value of BOLI Income earned from debit card services for the reporting period. Card Interchange Income Debit Card related income Noninterest Income, Other Operating Income Other income Noninterest Income Total noninterest income Noninterest Expense [Abstract] Noninterest expense Labor and Related Expense Salaries and employee benefits Equipment Expense Occupancy, furniture and equipment Communications and Information Technology Computer and data processing Amount of expense, including adjustments, for Federal Deposit Insurance Corporation (FDIC) insurance. Federal Deposit Insurance Corporation Premium Expense, Including Adjustments FDIC insurance Expense related to net teller and bill paying. Net Teller and Bill Paying Expense Net teller & bill paying General Insurance Expense General bank insurance Amortization of Intangible Assets Amortization of core deposit intangible Amortization of core deposit intangibles Marketing and Advertising Expense Advertising and marketing expense This element represents the debit card interchange expense. Debit Card Interchange Expense Card related expense Professional Fees Professional fees Amount of noninterest expenses incurred related to consumer credit activities Consumer Credit Expense Consumer credit expense This element represents the other real estate owned expense during the period. Other Real Estate Owned Expense Other real estate expense, net Other Noninterest Expense Other expense Noninterest Expense Total noninterest expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Provision for income taxes Net Income (Loss) Available to Common Stockholders, Basic Net income Earnings Per Share, Basic Basic earnings per share Basic earnings per share Earnings Per Share, Diluted Diluted earnings per share Diluted earnings per share Common Stock, Dividends, Per Share, Declared Dividends declared per share Consolidated Statements of Comprehensive Income Net income Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Unrealized holding (losses) gains on available-for-sale securities arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Related tax benefit (expense) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Holding (losses) gains, after tax, on available-for-sale securities Amount after tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Other Comprehensive Income Available for Sale Securities Unrealized Holding Gain (Loss) Net Reclassification Adjustment for Amounts Realized after Tax Other comprehensive (loss) income on available-for-sale securities Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Changes in fair value of derivatives used for cash flow hedges Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Related tax expense Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Other comprehensive income on cash flow hedges Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Total other comprehensive (loss) income Other comprehensive (loss) income, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Accretion (Amortization) of Discounts and Premiums, Investments Net premium / discount amortization on securities Payments for Origination of Mortgage Loans Held-for-sale Originations of loans held-for-sale Proceeds from Sale of Loans Held-for-sale Proceeds from sales of loans held-for-sale Represents the amount of net discount accretion of purchase accounting adjustment on loans. Net Discount Accretion Of Purchase Accounting Adjustment On Loans Net accretion of purchase accounting adjustments and other discounts on loans The net gain (loss) resulting from sales and other disposals of other real estate owned, net of changes to valuation adjustment. Gains (Losses) on Sales of Other Real Estate Net of Changes to Valuation Adjustment Net (gains) losses on sale of other real estate owned Real Estate Owned, Valuation Allowance, Provision Provision for other real estate owned valuation losses Depreciation, Depletion and Amortization Depreciation of fixed assets and amortization of leasehold improvements The increase (decrease) during the reporting period in the operating lease right of use asset. Increase (Decrease) In Operating Lease Right Of Use Asset Change in operating lease right-of-use asset Increase (Decrease) in Income Taxes Payable Change in current income taxes Represents the amount of deferred tax expense benefit after deferred tax asset valuation adjustment Deferred Income Tax Expense Benefit After Deferred Tax Asset Valuation Adjustment Deferred tax expense The net change during the reporting period in accrued interest receivable and other assets. Increase (Decrease) in Accrued Interest Receivable and Other Assets Change in accrued interest receivable and other assets Represents the amount of premium amortization/discount (accretions) of purchase account adjustments on loans. Net Premium Amortization Discount (Accretion) of Purchase Accounting Adjustments on Loans Accretion of purchase accounting adjustment on time deposits The net change during the reporting period in accrued interest payable and other liabilities. Increase (Decrease) in Accrued Interest Payable and Other Liabilities Change in accrued interest payable and other liabilities Increase (Decrease) in Operating Lease Liability Change in operating lease payable Share-based Compensation Stock based compensation Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from maturities and calls, including pay down of securities available-for-sale Proceeds from Sale of Available-for-sale Securities Proceeds from sales of securities available-for-sale Proceeds from sales of securities Payments to Acquire Available-for-sale Securities Purchases of securities available-for-sale Payments for (Proceeds from) Federal Home Loan Bank Stock Net (purchases) redemptions of FHLBC/FRBC stock Payments for (Proceeds from) Loans and Leases Net change in loans Payment to Acquire Life Insurance Policy, Investing Activities Purchases of BOLI policies Proceeds from Sale of Other Real Estate Proceeds from sales of other real estate owned, net of participations Proceeds from Sale of Productive Assets Proceeds from disposition of premises and equipment Payments to Acquire Property, Plant, and Equipment Net purchases of premises and equipment Payments to Acquire Businesses, Net of Cash Acquired Cash received from acquisition, net Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities Increase (Decrease) in Deposits Net change in deposits Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase Net change in securities sold under repurchase agreements The net cash inflow or outflow for other borrowings having an initial term of repayment within one year or the operating cycle, if longer. Proceeds From (Repayments) of Other Short-term Borrowings Net change in other short-term borrowings Repayments of Subordinated Debt Redemption of subordinated debentures Redemption of junior subordinated debt Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Excluding Option Exercised Vesting of restricted stock, net of excise taxes Payments of Ordinary Dividends, Common Stock Dividends paid on common stock Payments for Repurchase of Common Stock Purchase of treasury stock Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash (used in) provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Consolidated Statements of Changes in Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive (Loss) Income Total Accumulated Other Comprehensive Income/(Loss) Treasury Stock