Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net Income	$ 22,678	$ 13,291
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	0	4,000
Net gain on sales of loans	(10,614)	(13,939)
Net gain on sales of investments and MBS	0	(142)
Net gain on mortgage servicing rights	(2,834)	(2,216)
Stock based compensation	632	990
(Gain) loss on OREO	214	(752)
Increase in cash surrender value of BOLI	(1,461)	(1,486)
Depreciation and amortization	10,692	10,921
Bargain purchase gain	(7,544)	0
Change in:
Accrued interest receivable	(2,253)	2,085
Prepaid expenses and other assets	2,148	(11,321)
Accrued interest payable	(419)	1,556
Accrued expenses and other liabilities	(47,044)	2,308
Proceeds from sales of loans originated for sale	797,735	578,189
Loans originated for sale	(631,632)	(577,405)
Net cash provided by operating activities	130,298	6,079
Cash flows from investing activities:
Change in restricted cash	16,826	(17,003)
Net change in loans	(129,515)	(125,173)
Proceeds from sales of loans	2,190	1,718
Purchase of investment securities	0	(2,530)
Proceeds from maturities of investment securities	169	13,484
Proceeds from sale of investment securities	0	178,380
Purchase of MBS	(76,590)	(72,032)
Principal payments received on MBS	108,098	158,133
Proceeds from sales of MBS	0	283
Office properties and equipment, net	(5,537)	(1,814)
Improvements and other changes to OREO	(125)	(760)
Proceeds from sales of OREO	6,738	22,424
Net change in cash and cash equivalents from acquisitions	6,877	121,098
Net cash provided by investing activities	(70,869)	276,208
Cash flows from financing activities:
Net change in deposits	43,499	(231,869)
Advances from FHLB	225,000	0
Repayment of advances from FHLB	(290,054)	(200,052)
Net change in short term repurchase agreements	(5,801)	10,032
Payments under structured repurchase agreements	(50,000)	0
Proceeds from stock issuance, net	413	319
Net cash used in financing activities	(76,943)	(421,570)
Net change in cash and cash equivalents	(17,514)	(139,283)
Cash and cash equivalents, beginning of period	299,878	470,599
Cash and cash equivalents, end of period	282,364	331,316
Supplemental disclosures:
Interest	14,247	21,923
Income taxes, net	687	31
Noncash financing and investing activities:
Foreclosed real estate acquired in settlement of loans	$ 6,764	$ 9,385