Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Cash and cash equivalents:
Interest bearing	$ 221,192	$ 173,962
Noninterest bearing	87,870	125,916
Total cash and cash equivalents	309,062	299,878
Restricted cash	16,648	31,672
Investments and mortgage-backed securities ("MBS"):
Available for sale	1,538,880	1,513,157
Held to maturity	185	206
Loans held for sale, at fair value	307,511	465,983
Loans receivable, net ($36,338 and $23,177 at fair value)	6,868,866	6,101,749
Accrued interest receivable	31,013	28,019
Other real estate owned, net ("OREO")	26,511	25,042
Properties and equipment, net	98,483	93,850
Bank-owned life insurance ("BOLI")	188,178	179,828
Goodwill	36,633	22,577
Other intangible assets, net	17,830	19,072
Mortgage servicing rights, net	52,430	32,420
Deferred tax asset, net	290,377	292,082
Other assets, net	156,966	131,375
Total assets	9,939,573	9,236,910
LIABILITIES:
Noninterest bearing	1,702,022	1,702,740
Interest bearing	4,926,437	4,733,377
Total deposits	6,628,459	6,436,117
Advances from Federal Home Loan Bank ("FHLB")	1,197,857	605,330
Securities sold under repurchase agreements	527,925	586,867
Junior subordinated debentures	245,297	245,294
Accrued interest payable	4,084	4,229
Accrued expenses and other liabilities	129,615	141,150
Total liabilities	8,733,237	8,018,987
SHAREHOLDERS' EQUITY:
Preferred stock, 10,000,000 shares authorized; no shares outstanding	0	0
Common stock, 151,515,151 shares authorized; 62,297,712 and 62,207,529 shares outstanding, respectively	1,970,229	1,968,025
Accumulated other comprehensive income	30,751	60,712
Accumulated deficit	(794,644)	(810,814)
Total shareholders' equity	1,206,336	1,217,923
Total liabilities and shareholders' equity	$ 9,939,573	$ 9,236,910