Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 19,360	$ 17,789
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	30,400	31,400
Net loss on disposal of property and equipment	3	306
Depreciation and amortization	8,677	9,986
Net premium amortization on investment securities	4,932	2,259
Net gains on investment securities transactions	(18)	(42)
Net gains on sales of loans held for sale	(4,984)	(4,553)
Write-down of OREO and equipment pending disposal	3,515	3,133
Net (recovery) impairment on mortgage servicing rights	(320)	221
Loss on early extinguishment of debt		306
Deferred income tax benefit	(538)	(1,223)
Net increase in cash surrender value of company-owned life insurance policies	(1,024)	(1,021)
Stock-based compensation expense	1,116	988
Tax benefits from stock-based compensation expense	224	228
Excess tax benefits from stock-based compensation	(157)	(220)
Changes in operating assets and liabilities:
Decrease (increase) in loans held for sale	21,709	(8,874)
Decrease (increase) in interest receivable	40	(1,306)
Decrease in other assets	11,461	3,927
(Decrease) increase in accrued interest payable	(1,466)	2,857
Decrease in accounts payable and accrued expenses	(3,275)	(8,439)
Net cash provided by operating activities	89,655	47,722
Purchases of investment securities:
Held-to-maturity	(7,434)	(12,243)
Available-for-sale	(406,564)	(529,379)
Proceeds from maturities and paydowns of investment securities:
Held-to-maturity	5,405	6,871
Available-for-sale	335,877	354,652
Proceeds from sales of mortgage servicing rights, net of acquisitions		597
Extensions of credit to customers, net of repayments	34,535	(57,943)
Recoveries of loans charged-off	2,140	1,403
Proceeds from sales of OREO	7,963	7,749
Capital expenditures, net of sales	(4,730)	(4,843)
Net cash used in investing activities	(32,808)	(233,136)
Cash flows from financing activities:
Net decrease in deposits	(131,048)	(21,734)
Net decrease in repurchase agreements	(185,115)	(20,392)
Net increase in short-term borrowings	449	1,773
Repayments of long-term debt	(22)	(35,330)
Common stock issuance costs		(13,733)
Proceeds from issuance of common stock	102	167,339
Excess tax benefits from stock-based compensation	157	220
Purchase and retirement of common stock	(193)	(3,699)
Dividends paid to common stockholders	(9,607)	(8,331)
Dividends paid to preferred stockholders	(1,697)	(1,697)
Net cash (used in) provided by financing activities	(326,974)	64,416
Net decrease in cash and cash equivalents	(270,127)	(120,998)
Cash and cash equivalents at beginning of period	685,618	623,482
Cash and cash equivalents at end of period	415,491	502,484
Supplemental disclosures of cash flow information:
Cash paid during the period for income taxes	8,730	11,630
Cash paid during the period for interest expense	$ 24,535	$ 31,664