Consolidated Condensed Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities:
Net income	$ 50,361	$ 51,149
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, accretion and amortization	3,827	5,600
Provision for loan losses	13,576	26,616
Loan put provision	3,363	0
Other-than-temporary impairment on investment securities	54	0
Amortization of core deposit intangibles	1,894	1,338
Realized net investment security gains	0	(21,997)
OREO devaluations	4,007	5,890
Bank owned life insurance income	(2,386)	(2,457)
Changes in assets and liabilities:
(Increase) in other assets	(11,040)	(35,745)
(Decrease) in other liabilities	(566)	(1,666)
Net cash provided by operating activities	63,090	28,728
Investing activities:
Proceeds from sales of available-for-sale securities	0	319,504
Proceeds from sales of Federal Home Loan Bank stock	1,319	541
Proceeds from maturity of:
Available-for-sale securities	464,653	199,940
Held-to-maturity securities	303,595	87,434
Purchases of:
Available-for-sale securities	(509,998)	(330,839)
Held-to-maturity securities	(238,593)	(75,951)
Net (increase) in loans	(90,628)	(24,523)
Sale of assets/liabilities related to Vision Bank	(153,724)	0
Purchases of bank owned life insurance	(2,500)	(3,000)
Purchases of premises and equipment, net	(1,979)	(4,055)
Net cash (used in) investing activities	(227,855)	169,051
Financing activities:
Net increase in deposits	357,861	162,097
Net (decrease) in short-term borrowings	(22,992)	(429,557)
Proceeds from issuance of long-term debt	30,000	200,000
Repayment of long-term debt	(15,500)	(15,531)
Cash payment for fractional shares in dividend reinvestment plan	(1)	(1)
Cash payment for repurchase of common stock warrant from U.S. Treasury	(2,843)	0
Repurchase of preferred stock from U.S. Treasury	(100,000)	0
Cash dividends paid on common and preferred stock	(31,184)	(31,451)
Net cash provided by (used in) financing activities	215,341	(114,443)
Increase in cash and cash equivalents	50,576	83,336
Cash and cash equivalents at beginning of year	157,486	133,780
Cash and cash equivalents at end of period	208,062	217,116
Supplemental disclosures of cash flow information:
Interest	26,172	30,640
Income taxes	1,000	13,700
Non cash activities:
Securities acquired through payable	$ 0	$ 113,223