Consolidated Condensed Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Assets:
Cash and due from banks	$ 131,604	$ 109,058
Money market instruments	85,512	24,722
Cash and cash equivalents	217,116	133,780
Investment securities
Securities available-for-sale, at fair value (amortized cost of $1,107,211 and $1,274,258 at June 30, 2011 and December 31, 2010)	1,117,397	1,297,522
Securities held-to-maturity, at amortized cost (fair value of $786,222 and $686,114 at June 30, 2011 and December 31, 2010)	775,311	673,570
Other investment securities	68,158	68,699
Total investment securities	1,960,866	2,039,791
Loans	4,710,513	4,732,685
Allowance for loan losses	(120,174)	(143,575)
Net loans	4,590,339	4,589,110
Bank owned life insurance	151,930	146,450
Goodwill and other intangible assets	77,039	78,377
Bank premises and equipment, net	69,830	69,567
Other real estate owned	47,734	41,709
Accrued interest receivable	22,624	24,137
Mortgage loan servicing rights	10,259	10,488
Other	174,287	148,852
Total assets	7,322,024	7,282,261
Liabilities and Stockholders' Equity:
Noninterest bearing	984,160	937,719
Interest bearing	4,273,357	4,157,701
Total deposits	5,257,517	5,095,420
Short-term borrowings	234,112	663,669
Long-term debt	821,202	636,733
Subordinated debentures and notes	75,250	75,250
Accrued interest payable	5,732	6,123
Other	187,113	75,358
Total liabilities	6,580,926	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)	97,718	97,290
Common stock (No par value; 20,000,000 shares authorized; 16,151,042 shares issued at June 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	425,679	406,342
Treasury stock (752,129 shares at June 30, 2011 and 752,128 shares at December 31, 2010)	(77,733)	(77,733)
Accumulated other comprehensive (loss), net of taxes	(10,175)	(1,868)
Total stockholders' equity	741,098	729,708
Total liabilities and stockholders' equity	$ 7,322,024	$ 7,282,261