Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Cash and due from banks	$ 39,689	$ 31,441
Interest-bearing deposits in banks	478,543	263,540
Total cash and cash equivalents	518,232	294,981
Investment securities:
Available for sale, at fair value	1,850,526	1,903,922
Held to maturity (fair value of $196,382 and $194,350 as of June 30, 2012 and December 31, 2011, respectively)	190,615	189,518
Other investments	133,282	98,392
Total investment securities	2,174,423	2,191,832
Loans held for sale (includes $1,105,985 and $777,280 carried at fair value as of June 30, 2012 and December 31, 2011, respectively)	3,178,597	2,725,286
Loans and leases held for investment:
Covered by loss share or indemnification agreements	727,708	841,146
Not covered by loss share or indemnification agreements	7,057,722	5,678,135
Loans and leases held for investment, net of unearned income	7,785,430	6,519,281
Allowance for loan and lease losses	(77,393)	(77,765)
Total loans and leases held for investment, net	7,708,037	6,441,516
Equipment under operating leases, net	61,811	56,399
Mortgage servicing rights (MSR), net	415,962	489,496
Deferred income taxes, net	163,561	151,634
Premises and equipment, net	52,037	43,738
Other assets	768,164	646,796
Total Assets	15,040,824	13,041,678
Deposits
Noninterest-bearing	1,356,769	1,234,615
Interest-bearing	9,446,974	9,031,148
Total deposits	10,803,743	10,265,763
Other borrowings	2,503,636	1,257,879
Trust preferred securities	103,750	103,750
Accounts payable and accrued liabilities	448,326	446,621
Total Liabilities	13,859,455	12,074,013
Shareholders' Equity
Common Stock, $0.01 par value (500,000,000 and 150,000,000 shares authorized at June 30, 2012 and December 31, 2011, respectively; 116,479,658 and 75,094,375 issued and outstanding at June 30, 2012 and December 31, 2011, respectively)	1,165	751
Additional paid-in capital	762,422	561,247
Retained earnings	530,876	513,413
Accumulated other comprehensive income (loss) (AOCI)	(113,094)	(107,749)
Total Shareholders' Equity	1,181,369	967,665
Total Liabilities and Shareholders' Equity	15,040,824	13,041,678
Series A Preferred Stock [Member]
Shareholders' Equity
Cumulative Convertible Preferred Stock	0	2
Series B Preferred Stock [Member]
Shareholders' Equity
Cumulative Convertible Preferred Stock	$ 0	$ 1