Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Cash and cash equivalents:
Interest bearing	$ 213,390	$ 173,962
Noninterest bearing	68,974	125,916
Total cash and cash equivalents	282,364	299,878
Restricted cash	14,846	31,672
Investments and mortgage-backed securities ("MBS"):
Available for sale	1,471,563	1,513,157
Held to maturity	195	206
Loans held for sale	295,505	465,983
Loans Receivable, Net	6,334,560	6,101,749
Accrued interest receivable	30,705	28,019
Other real estate owned, net ("OREO")	29,056	25,042
Properties and equipment, net	96,594	93,850
Bank-owned life insurance ("BOLI")	185,953	179,828
Goodwill	22,577	22,577
Other intangible assets, net	17,866	19,072
Mortgage servicing rights, net	45,061	32,420
Deferred tax asset, net	288,764	292,082
Other assets, net	140,827	131,375
Total assets	9,256,436	9,236,910
LIABILITIES:
Noninterest bearing	1,705,835	1,702,740
Interest bearing	4,892,003	4,733,377
Total deposits	6,597,838	6,436,117
Advances from Federal Home Loan Bank ("FHLB")	541,259	605,330
Securities sold under repurchase agreements	531,066	586,867
Junior subordinated debentures	245,295	245,294
Accrued interest payable	3,845	4,229
Accrued expenses and other liabilities	100,128	141,150
Total liabilities	8,019,431	8,018,987
SHAREHOLDERS' EQUITY:
Preferred stock, 10,000,000 shares authorized; no shares outstanding	0	0
Common stock, 151,515,151 shares authorized; 62,275,581 and 62,207,529 shares outstanding, respectively	1,969,070	1,968,025
Accumulated Other Comprehensive Income (Loss), Net of Tax	56,076	60,712
Accumulated deficit	(788,141)	(810,814)
Total shareholders' equity	1,237,005	1,217,923
Total liabilities and shareholders' equity	$ 9,256,436	$ 9,236,910