Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
OPERATING ACTIVITIES
Net Income	$ 47,264	$ 43,480	$ 7,951
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	15,609	29,511	72,354
Provision for unfunded loan commitments	(1,474)	(1,555)	2,888
Depreciation and amortization	6,323	6,587	7,044
Net amortization of discounts and premiums	1,191	881	948
Stock-based compensation expense	960	513	321
Security losses (gains), net	124	(274)	5,088
Deferred income taxes	2,448	(4,537)	(7,465)
Tax expense (benefit) from stock-based compensation	66	(46)	(4)
Mortgage loans originated for sale	(68,261)	(121,883)	(144,852)
Proceeds from the sale of loans	74,780	119,617	139,556
Gain on the sale of loans, net	(875)	(1,809)	(510)
Net decrease in interest receivable	589	2,752	4,470
Net decrease in interest payable	(443)	(1,678)	(2,582)
Net decrease (increase) in other assets	4,132	(2,745)	(17,917)
Net (decrease) increase in other liabilities	(8,531)	20,170	(12,723)
Net Cash Provided by Operating Activities	73,902	88,984	54,567
INVESTING ACTIVITIES
Proceeds from maturities, prepayments and calls of securities available-for-sale	71,318	146,960	177,443
Proceeds from sales of securities available-for-sale	70	2,579	4,833
Purchases of securities available-for-sale	(135,447)	(82,890)	(86,135)
Proceeds from the redemption of Federal Home Loan Bank stock	4,149	1,177
Net decrease in loans	185,182	3,236	113,064
Proceeds from the sale of loans not originated for resale	8,595
Purchases of premises and equipment	(2,531)	(3,469)	(1,577)
Proceeds from the sale of premises and equipment	404	60	1,314
Net Cash Provided by Investing Activities	131,740	67,653	208,942
FINANCING ACTIVITIES
Net increase in core deposits	105,776	63,383	79,565
Net decrease in certificates of deposit	(87,553)	(50,536)	(3,694)
Net increase (decrease) in short-term borrowings	75,000	(51,300)	(257,175)
Net decrease in securities sold under repurchase agreements and federal funds purchased	(10,283)	(4,281)	(68,484)
Proceeds from long-term borrowings	4,192	9,241
Repayments of long-term borrowings	(1,682)	(65,770)	(94,437)
Proceeds from issuance of preferred stock and common stock warrant			108,676
Redemption of preferred stock	(108,676)
Purchase of treasury shares	(64)
Sale of treasury shares	1,946	3,692	1,349
Preferred stock dividends	(5,072)	(5,434)	(4,513)
Cash dividends paid to common shareholders	(16,830)	(16,683)	(25,427)
Tax (expense) benefit from stock-based compensation	(66)	46	4
Net Cash Used in Financing Activities	(43,312)	(117,642)	(264,136)
Net increase (decrease) in cash and cash equivalents	162,330	38,995	(627)
Cash and cash equivalents at beginning of year	108,196	69,201	69,828
Cash and Cash Equivalents at End of Year	270,526	108,196	69,201
Supplemental Disclosures
Interest paid	27,733	36,251	41,082
Income taxes paid	15,100	14,818	5,338
Loans transferred to held for sale	8,753
Transfers to other real estate owned and other repossessed assets	$ 8,472	$ 11,308	$ 4,081