Notes to Financial Statements [Abstract] Notes to Financial Statements [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Statement [Line Items] Statement [Line Items] Allowance for Loan Losses [Text Block] Allowance for Loan Losses [Text Block] Allowance for Loan Losses. Schedule of Dividends Payable [Text Block] Schedule of Dividends Payable [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Available-for-sale securities, including encumbered securities of $981,857 and $933,315, at fair value Available-for-sale Securities Held-to-maturity securities, including encumbered securities of $50,760 and $60,970, at amortized cost Held-to-maturity Securities Loans receivable, net Loans and Leases Receivable, Net Reported Amount Covered loans, net Loans and Leases Receivable Covered Loans Loans And Leases Receivable Covered Loans, Net. Interest receivable Accrued Investment Income Receivable Premises and equipment, net Property, Plant and Equipment, Net Real estate held for sale Real Estate Held-for-sale Covered real estate held for sale Real Estate Held for Sale Covered Real Estate Held for Sale Carrying amount as of the balance sheet date of covered investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. FDIC indemnification asset FDIC Loss Share Receivable The net present value of the amount expected to be received from the FDIC in connection with loss share agreements. FHLB stock Federal Home Loan Bank Stock Intangible assets, net Goodwill and Intangible Assets Net Sum of the carrying amounts of all goodwill and intangible assets of the balance sheet date, net of accumulated amortization and impairment charges. Federal and state income taxes, net Income Taxes Receivable Other assets Other Assets Assets, Total Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Stockholders' Equity [Abstract] Liabilities Liabilities [Abstract] Customer accounts Deposits [Abstract] Savings and demand accounts Deposits Repurchase agreements with customers Securities Sold under Agreements to Repurchase Savings And Demand Accounts And Repurchase Agreements With Customers Savings And Demand Accounts And Repurchase Agreements With Customers Savings And Demand Accounts And Repurchase Agreements With Customers FHLB advances Long-term Federal Home Loan Bank Advances Other borrowings Other Borrowings Advance payments by borrowers for taxes and insurance Advance Payments by Borrowers for Taxes and Insurance Federal and State income taxes Taxes Payable Accrued expenses and other liabilities Accrued expenses and other liabilities Accrued Expenses and Other Liabilities Liabilities, Total Liabilities Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $1.00 par value, 300,000,000 shares authorized; 129,796,749 and 129,555,956 shares issued; 112,074,425 and 112,483,632 shares outstanding Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost; 17,722,324 and 17,072,324 shares Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Stockholders' Equity Attributable to Parent, Total Stockholders' Equity Attributable to Parent Liabilities and Stockholders' Equity, Total Liabilities and Stockholders' Equity Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Assets Covered by FDIC Loss Share Disclosure [Text Block] Assets Covered by FDIC Loss Share Disclosure [Text Block] Assets Covered By FDIC Loss Share Disclosure. Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization (accretion) of fees, discounts, premiums and intangible assets, net Amortization (accretion) of fees, discounts, premiums and intangible assets, net The aggregate amount of recurring noncash expense charged against earnings in the period for net deferred loan fees, discounts/premiumns of investments and to allocate the cost of intangible assets over their estimated remaining economic lives. Cash received from FDIC under loss share Increase Decrease in FDIC Indemnification Asset Increase (Decrease) in FDIC Indemnification Asset Depreciation Depreciation Premises and Equipment Stock option compensation expense Stock Option Plan Expense Provision for loan losses Provision for Loan and Lease Losses Loss (gain) on investment securities and real estate held for sale, net Gain Loss on Sale of Investments in Securities and Other The net gain or loss on sale of investments in securities and other. Gain on FDIC-assisted transaction Gain on FDIC assisted transaction The amount of pre-tax gain recognized from the FDIC-assisted transaction. Decrease (increase) in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Increase (decrease) in income taxes payable/receivable Increase Decrease in Income Taxes Net The net change during the reporting period in income taxes, net. FHLB stock dividends Increase Decrease in Federal Home Loan Bank Stock Dividends The amount of noncash income recorded to earnings for the period for Federal Home Loan Bank stock dividends. Decrease (increase) in other assets Increase (Decrease) in Other Operating Assets Decrease in accrued expenses and other liabilities Increase Decrease in Accrued Expenses and Other Liabilities The net change during the reporting period in accrued expenses and other liabilities. Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] (Loan originations) principal collections, net Total Loans Originated Net of Principal Collections Total loans originated net of principal collections. Available-for-sale securities purchased Payments to Acquire Available-for-sale Securities Principal payments and maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Available-for-sale securities sold Proceeds from Sale of Available-for-sale Securities Principal payments and maturities of held-to-maturity securities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Net cash received from acquisition Cash Acquired from Acquisition Proceeds from sales of real estate held for sale Proceeds from Sale of Property Held-for-sale Premises and equipment purchased Payments to Acquire Property, Plant, and Equipment Net cash provided (used) by investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase (decrease) in customer accounts Increase (Decrease) in Deposits Net decrease in borrowings Proceeds from (Repayments of) Debt Proceeds from exercise of common stock options Proceeds from Stock Options Exercised Dividends paid Payments of Dividends, Common Stock Treasury stock purchased Payments for Repurchase of Common Stock Decrease in advance payments by borrowers for taxes and insurance Increase Decrease in Advance Payments by Borrowers for Taxes and Insurance Increase/ (decrease) in advances by borrowers for taxes and insurance Net cash provided (used) by financing activities Net Cash Provided by (Used in) Financing Activities Increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Non-cash investing activities Cash Flow Noncash Investing Disclosure [Abstract] Cash Flow, Noncash Investing Disclosure [Abstract] Non-covered real estate acquired through foreclosure Real Estate Acquisitions Through Foreclosures Noncovered The amount of non-covered real estate investments acquired through foreclosure during the period. Title through foreclosure occurs in a legal proceeding in which a secured creditor obtains title typically be bidding the amount of debt owed to it after the borrower has defaulted on the debt instrument. Covered real estate acquired through foreclosure Real Estate Acquisitions Through Foreclosures Covered The amount of covered real estate investments acquired through foreclosure during the period. Title through foreclosure occurs in a legal proceeding in which a secured creditor obtains title typically be bidding the amount of debt owed to it after the borrower has defaulted on the debt instrument. Cash paid during the period for Cash paid during the period for [Abstract] Cash Paid During Period For [Abstract] Interest Interest Paid Income taxes Income Taxes Paid Income Statement [Abstract] INTEREST INCOME Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Mortgage-backed securities Interest Income, Securities, Mortgage Backed Investment securities and cash equivalents Investment Income and Other Income derived from investments in debt and equity securities and on cash and cash equivalents. Interest income represents earnings which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Other income includes realized gains and losses and other items not otherwise defined due to materiality considerations. Interest and Dividend Income, Operating, Total Interest and Dividend Income, Operating INTEREST EXPENSE Interest Expense [Abstract] Customer accounts Interest Expense, Deposits FHLB advances and other borrowings Interest Expense, Borrowings Interest Expense, Total Interest Expense Net interest income Interest Income (Expense), Net Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss OTHER INCOME Noninterest Income [Abstract] Gain on FDIC-assisted transaction Gain on sale of investments Gain (Loss) on Sale of Securities, Net Other Noninterest Income, Other Operating Income Noninterest Income, Total Noninterest Income OTHER EXPENSE Noninterest Expense [Abstract] Compensation and benefits Labor and Related Expense Occupancy Occupancy, Net FDIC insurance premiums Federal Deposit Insurance Corporation Premium Expense Other Other Noninterest Expense Noninterest Expense, Total Noninterest Expense Loss on real estate acquired through foreclosure, net Gains (Losses) on Sales of Other Real Estate Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income tax provision Income Tax Expense (Benefit) NET INCOME PER SHARE DATA Earnings Per Share [Abstract] Basic earnings Earnings Per Share, Basic Diluted earnings Earnings Per Share, Diluted Cash dividends per share Common Stock, Dividends, Per Share, Cash Paid Basic weighted average number of shares outstanding Weighted Average Number of Shares Outstanding, Basic Diluted weighted average number of shares outstanding, including dilutive stock options Weighted Average Number of Shares Outstanding, Diluted Fair Value, Measurement Inputs, Disclosure [Text Block] Fair Value, Measurement Inputs, Disclosure [Text Block] Comprehensive Income Note [Text Block] Comprehensive Income Note [Text Block] Available-for-sale securities, encumbered securities Available-for-sale Securities, Restricted Held-to-maturity securities, encumbered securities Held-to-maturity Securities, Restricted Common stock, par value 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 Treasury stock, shares Treasury Stock, Shares Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding