Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 13,291	$ 5,417
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	4,000	10,000
Net gain on sales of loans	(13,939)	(7,376)
Net gain on sales of investments and MBS	(142)	(6,001)
Net gain on mortgage servicing rights	(2,216)	(3,570)
Stock based compensation	990	927
Loss on OREO	4,551	17,364
Increase in cash surrender value of BOLI	(1,486)	(1,732)
Depreciation and amortization	10,921	11,573
Change in:
Accrued interest receivable	2,085	(957)
Prepaid expenses and other assets	(11,321)	(11,933)
Accrued interest payable	1,556	760
Accrued expenses and other liabilities	2,308	21,972
Proceeds from sales of loans originated for sale	578,189	469,392
Loans originated for sale	(577,405)	(363,453)
Net cash provided by operating activities	11,382	142,383
Cash flows from investing activities:
Change in restricted cash	(17,003)	1,012
Net change in loans	(130,476)	(55,083)
Proceeds from sales of loans	1,718	10,483
Purchase of investment securities	(2,530)	(2,000)
Proceeds from maturities of investment securities	13,484	94
Proceeds from sale of investment securities	178,380	5,377
Purchase of MBS	(72,032)	(233,538)
Principal payments received on MBS	158,133	130,111
Proceeds from sales of MBS	283	113,402
Office properties and equipment, net	(1,814)	(7,489)
Improvements and other changes to OREO	(760)	(5,404)
Proceeds from sales of OREO	22,424	77,922
Net change in cash and cash equivalents from acquisitions	121,098	0
Net cash provided by investing activities	270,905	34,887
Cash flows from financing activities:
Net change in deposits	(231,869)	(186,580)
Repayment of advances from FHLB	(200,052)	(48)
Net change in securities sold under repurchase agreements and funds purchased	10,032	19,483
Proceeds from stock issuance, net	319	0
Net cash used in financing activities	(421,570)	(167,145)
Net change in cash and cash equivalents	(139,283)	10,125
Cash and cash equivalents, beginning of period	470,599	411,583
Cash and cash equivalents, end of period	331,316	421,708
Supplemental disclosures:
Interest	21,923	28,734
Income taxes, net	31	(56)
Noncash financing and investing activities:
Foreclosed real estate acquired in settlement of loans	$ 14,688	$ 79,820