Consolidated Condensed Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Assets:
Cash and due from banks	$ 132,988	$ 109,058
Money market instruments	139,109	24,722
Cash and cash equivalents	272,097	133,780
Investment securities
Securities available-for-sale, at fair value (amortized cost of $772,910 and $1,274,258 at September 30, 2011 and December 31, 2010)	797,163	1,297,522
Securities held-to-maturity, at amortized cost (fair value of $861,369 and $686,114 at September 30, 2011 and December 31, 2010)	843,576	673,570
Other investment securities	67,892	68,699
Total investment securities	1,708,631	2,039,791
Loans	4,680,575	4,732,685
Allowance for loan losses	(107,310)	(143,575)
Net loans	4,573,265	4,589,110
Bank owned life insurance	153,159	146,450
Goodwill and other intangible assets	76,370	78,377
Bank premises and equipment, net	68,633	69,567
Other real estate owned	46,911	41,709
Accrued interest receivable	21,990	24,137
Mortgage loan servicing rights	10,069	10,488
Other	163,973	148,852
Total assets	7,095,098	7,282,261
Liabilities and Stockholders' Equity:
Noninterest bearing	1,000,969	937,719
Interest bearing	4,088,218	4,157,701
Total deposits	5,089,187	5,095,420
Short-term borrowings	243,071	663,669
Long-term debt	823,722	636,733
Subordinated debentures and notes	75,250	75,250
Accrued interest payable	5,416	6,123
Other	103,399	75,358
Total liabilities	6,340,045	6,552,553
COMMITMENTS AND CONTINGENCIES
Stockholders' equity:
Preferred stock (200,000 shares authorized; 100,000 shares issued with $1,000 per share liquidation preference)	97,932	97,290
Common stock (No par value; 20,000,000 shares authorized; 16,151,033 shares issued at September 30, 2011 and 16,151,062 shares issued at December 31, 2010)	301,203	301,204
Common stock warrants	4,406	4,473
Retained earnings	430,121	406,342
Treasury stock (752,129 shares at September 30, 2011 and 752,128 shares at December 31, 2010)	(77,733)	(77,733)
Accumulated other comprehensive (loss), net of taxes	(876)	(1,868)
Total stockholders' equity	755,053	729,708
Total liabilities and stockholders' equity	$ 7,095,098	$ 7,282,261