CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 101,460	$ 73,312
Interest-bearing time deposits	38,443	52,851
Investment securities available for sale	513,343	518,491
Investment securities held to maturity (fair value of $378,174 and $442,469)	361,020	427,909
Mortgage loans held for sale	22,300	17,864
Loans	2,902,209	2,713,415
Less: Allowance for loan losses	(69,366)	(70,898)
Net loans	2,832,843	2,642,517
Premises and equipment	52,749	51,013
Federal Reserve and Federal Home Loan Bank stock	32,785	31,270
Interest receivable	16,367	17,723
Core deposit intangibles	8,154	9,114
Goodwill	141,375	141,357
Cash surrender value of life insurance	125,397	124,329
Other real estate owned	13,263	16,289
Tax asset, deferred and receivable	30,867	36,424
Other assets	14,455	12,613
TOTAL ASSETS	4,304,821	4,173,076
Deposits:
Noninterest-bearing	801,597	646,508
Interest-bearing	2,544,786	2,488,147
Total Deposits	3,346,383	3,134,655
Borrowings:
Federal funds purchased	18,862
Securities sold under repurchase agreements	141,828	156,305
Federal Home Loan Bank advances	94,238	138,095
Subordinated debentures and term loans	112,161	194,974
Total Borrowings	367,089	489,374
Interest payable	1,841	2,925
Other liabilities	37,272	31,655
Total Liabilities	3,752,585	3,658,609
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY
Common Stock - $.125 stated value, Authorized 50,000,000 shares, Issued and outstanding 28,692,616 and 28,559,707 shares	3,587	3,570
Additional paid-in capital	256,843	254,874
Retained earnings	206,397	168,717
Accumulated other comprehensive loss	(5,499)	(3,602)
Total Stockholders' Equity	552,236	514,467
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	4,304,821	4,173,076
Preferred stock, Series B
STOCKHOLDERS' EQUITY
Preferred Stock (Senior Non-Cumulative Perpetual Preferred Stock, Series B - no-par value, $1,000 liquidation value, Authorized 500,000 shares, Issued and outstanding 90,782.94 shares) (Cumulative Preferred Stock - $1,000 par value, $1,000 liquidation value, Authorized 600 shares, Issued and outstanding 125 shares)	90,783	90,783
Cumulative Preferred Stock
STOCKHOLDERS' EQUITY
Preferred Stock (Senior Non-Cumulative Perpetual Preferred Stock, Series B - no-par value, $1,000 liquidation value, Authorized 500,000 shares, Issued and outstanding 90,782.94 shares) (Cumulative Preferred Stock - $1,000 par value, $1,000 liquidation value, Authorized 600 shares, Issued and outstanding 125 shares)	$ 125	$ 125