Cash and due from financial institutions Loans held for sale Securities available for sale Total investment securities Total investment securities Loans, net of unearned income Allowance for loan losses Allowance for loan losses Net loans Net loans Bank premises and equipment Goodwill Other intangible assets Other assets Total assets Total assets Noninterest-bearing demand deposits Interest-bearing deposits Total deposits Total deposits Short-term borrowings Long-term debt Accrued interest payable Accrued expenses and other liabilities Total liabilities Total liabilities Preferred stock, no par value. Authorized, 20,000,000 shares; issued and outstanding, 300,000 shares Common stock, no par value. Authorized - 200,000,000 shares Issued - 96,999,231 and 96,947,377 shares, respectively Capital surplus Retained earnings Accumulated other comprehensive income (loss) Treasury stock at cost - 500,000 shares Treasury stock at cost - 500,000 shares Total shareholders' equity Total shareholders' equity Balance Balance Total liabilities and shareholders' equity Total liabilities and shareholders' equity CONSOLIDATED BALANCE SHEETS Statement [Table] Statement [Line Items] ASSETS Investment securities Marketable Securities [Abstract] LIABILITIES SHAREHOLDERS' EQUITY Securities held to maturity, fair values of $166,164 and $180,384, respectively Preferred Stock, par value Preferred Stock, authorized Preferred Stock, issued Preferred Stock, outstanding Common Stock, par value Common Stock, authorized Common Stock, issued Balance, Shares Ending Balance, Shares Interest and fees on loans Total interest income Total interest income Interest on deposits Interest on short-term borrowings Interest on long-term debt Total interest expense Total interest expense NET INTEREST INCOME NET INTEREST INCOME PROVISION FOR CREDIT LOSSES NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES Service charges on deposit accounts Trust service fees Secondary mortgage market operations Other noninterest income Securities transactions Total noninterest income Total noninterest income Employee compensation Total personnel Total personnel Net occupancy Equipment and data processing Legal and other professional services The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings and the amount of fees charged for services from other professionals such as doctors, lawyers and accountants. Deposit insurance and regulatory fees Telecommunication and postage The amount of expense incurred in the period for communication, which is the exchange of information by several methods and the amount of expense associated with postage. Amortization of intangibles Other noninterest expense Total noninterest expense Total noninterest expense INCOME (LOSS) BEFORE INCOME TAXES INCOME (LOSS) BEFORE INCOME TAXES INCOME TAX EXPENSE (BENEFIT) NET INCOME (LOSS) NET INCOME (LOSS) Net income (loss) Net income (loss) Preferred stock dividends NET INCOME (LOSS) TO COMMON SHAREHOLDERS NET INCOME (LOSS) TO COMMON SHAREHOLDERS CONSOLIDATED STATEMENTS OF INCOME INTEREST INCOME INTEREST EXPENSE NONINTEREST INCOME NONINTEREST EXPENSE EARNINGS (LOSS) PER COMMON SHARE Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted CASH DIVIDENDS PER COMMON SHARE CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY Statement, Equity Components [Axis] Preferred Stock [Member] Common Stock Including Additional Paid in Capital [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income [Member] Treasury Stock [Member] Unrealized net holding gain on securities, net of reclassifications and tax Net change in prior service credit and net actuarial loss on retirement plans, net of tax Total comprehensive income (loss) Common stock dividends, $.02 per share Common stock issued to dividend reinvestment plan, shares Common stock issued to dividend reinvestment plan Employee incentive plan common stock activity, shares Employee incentive plan common stock activity Director compensation plan common stock activity, shares Director compensation plan common stock activity Common stock acquired under repurchase program, shares Common stock acquired under repurchase program Comprehensive income (loss): Other comprehensive income: Equity Component [Domain] Depreciation and amortization of bank premises and equipment Share-based compensation earned Premium amortization and discount accretion on securities, net Provision for credit losses and losses on foreclosed assets Net (gains) losses on asset dispositions, including gain on insurance settlement Deferred tax benefit Net (increase) decrease in loans originated and held for sale Net (increase) decrease in interest and other income receivable and prepaid expenses The net change during the reporting period in the amount due from borrowers for interest payments and amount due from other sources. Also includes the net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods. Net Decrease In Interest And Other Income Receivable And Prepaid Expenses Net increase (decrease) in interest payable and accrued income taxes and expenses The net change during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity and the net change during the period in the amount of cash payments due to taxing authorities for taxes that are based on the reporting entity's earnings. Other, net Net cash provided by operating activities Net cash provided by operating activities Proceeds from maturities of investment securities available for sale Purchases of investment securities available for sale Proceeds from maturities of investment securities held to maturity Net (increase) decrease in loans Net (increase) decrease in loans Net (increase) decrease in federal funds sold and short-term investments Payments To Acquire Property Plant And Equipment Purchases of bank premises and equipment Other Investing Activities Other, net Other, net Net cash provided by investing activities Net cash provided by investing activities Net increase (decrease) in transaction account and savings account deposits Net increase (decrease) in time deposits Net increase (decrease) in short-term borrowings Proceeds from issuance of long-term debt Repayment of long-term debt Repayment of long-term debt Proceeds from issuance of common stock Proceeds from issuance of common stock Purchases of common stock Purchases of common stock Cash dividends on common stock Cash dividends on common stock Cash dividends on preferred stock Cash dividends on preferred stock Other Financing Activities Other, net Net cash used in financing activities Net cash used in financing activities Decrease in cash and cash equivalents Decrease in cash and cash equivalents CONSOLIDATED STATEMENTS OF CASH FLOWS OPERATING ACTIVITIES Adjustments to reconcile net income (loss) to net cash provided by operating activities: INVESTING ACTIVITIES FINANCING ACTIVITIES Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash And Cash Equivalents At Carrying Value Cash received during the period for: Interest income Cash paid during the period for: Cash paid (refund received) during the period for: Interest expense Income taxes Noncash investing activities: Foreclosed assets received in settlement of loans Treasury stock at cost, shares Preferred stock dividend and discount accretion Common stock dividends, per share Federal funds sold and short-term investments Short-term investments Accrued interest receivable Taxable securities Tax-exempt securities Interest on federal funds sold and short-term investments Bank card fees Income earned from bank card services including late, over limit, and annual fees. This item excludes interest income earned on credit card balances and transactions. Employee benefits Corporate value and franchise taxes Taxes, excluding payroll, income and excise taxes, if not included elsewhere, that could include production, real and personal property, and other selling and distribution-related taxes. Includes Louisiana corporate value taxes. Nonlegal loan collection and other foreclosed asset costs Provision for valuation losses on foreclosed assets WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING Weighted Average Common Shares Outstanding [Abstract] Notes to Financial Statements [Abstract] Securities Held To Maturity Fair Values Securities held to maturity, fair values of $166,164 and $180,384, respectively Document Information [Text Block] Document Type Amendment Flag Amendment Description Document Period End Date BASIS OF PRESENTATION MERGERS AND ACQUISITIONS LOANS DEPOSITS SHORT-TERM BORROWINGS IMPAIRED LOANS, NONPERFORMING LOANS, FORECLOSED ASSETS AND SURPLUS PROPERTY EMPLOYEE RETIREMENT BENEFIT PLANS SHARE-BASED COMPENSATION GOODWILL AND OTHER INTANGIBLE ASSETS CONTINGENCIES SHAREHOLDERS' EQUITY AND REGULATORY MATTERS EARNINGS (LOSS) PER COMMON SHARE FAIR VALUE DISCLOSURES ACCOUNTING STANDARDS DEVELOPMENTS INVESTMENT SECURITIES ALLOWANCE FOR LOAN LOSSES AND RESERVE FOR LOSSES ON UNFUNDED CREDIT COMMITMENTS Investment securities OtherAssetsAccrued expensesOtherLiabilitiesTextBlock Note disclosure include trade accounts receivables, notes receivables, loans receivables, and so forth. This element also includes description and amounts of accounts payable and accrued disclosure at the end of the reporting period. This element may be used for the entire disclosure as a single block of text. OTHER ASSETS AND ACCRUED EXPENSES AND OTHER LIABILITIES Basic Diluted Proceeds from sales of foreclosed assets and surplus property The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place. OTHER NONINTEREST INCOME OTHER NONINTEREST EXPENSE IncomeTaxDisclosureTextBlock INCOME TAXES OFF-BALANCE SHEET FINANCIAL INSTRUMENTS AND DERIVATIVES [TEXT BLOCK] This item represents conditional obligations that are not recognized, wholly or in part, in the consoldidated balance sheets. These include commitments to extend credit under loan facilities and guarantees under standby and other letters of credit. This item also represents the complete disclosure of the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items. OFF-BALANCE SHEET FINANCIAL INSTRUMENTS AND DERIVATIVES Document Fiscal Period Focus Document Fiscal Year Focus Entity Common Stock, Shares Outstanding Entity Public Float Entity Filer Category Entity Current Reporting Status Entity Voluntary Filers Entity Well-known Seasoned Issuer Current Fiscal Year End Date Entity Central Index Key Entity Registrant Name Entity [Text Block] Balance, Shares Ending Balance, Shares Balance, Shares This item represents conditional obligations that are not recognized, wholly or in part, in the consoldidated balance sheets. These include commitments to extend credit under loan facilities and guarantees under standby and other letters of credit. This item also represents the complete disclosure of the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items.