CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Income from continuing operations	$ 110,101	$ 98,518
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	39,250	15,500
Depreciation and amortization	12,230	10,583
Bank owned life insurance (BOLI) income	(1,444)	(1,547)
Stock-based compensation expense	(9,286)	(11,690)
Excess tax expense from stock-based compensation arrangements	(1,134)	(2,534)
Net increase in loans held for sale, including proceeds from sales and repayments	(1,062)	0
(Gain) loss on sale of assets	134	(821)
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(77,873)	(13,762)
Accrued interest payable and other liabilities	2,339	(1,166)
Net cash provided by operating activities	91,827	116,461
Investing activities
Maturities and calls of available-for-sale securities	2,430	11,150
Principal payments received on available-for-sale securities	6,677	7,712
Originations of mortgage finance loans	(66,786,322)	(40,244,845)
Proceeds from pay-offs of mortgage finance loans	66,575,657	39,254,648
Net increase in loans held for investment, excluding mortgage finance loans	(1,417,605)	(1,206,606)
Purchase (disposal) of premises and equipment, net	(3,729)	(9,110)
Proceeds from sale of foreclosed assets	1,430	5,823
Net cash used in investing activities	(1,621,462)	(2,181,228)
Financing activities
Net increase in deposits	2,492,045	2,458,429
Net expense from issuance of stock related to stock-based awards	(948)	(2,074)
Net proceeds from issuance of common stock	0	106,548
Preferred dividends paid	(7,313)	(7,313)
Net increase (decrease) in other borrowings	149,995	(397,462)
Excess tax benefits from stock-based compensation arrangements	1,134	2,534
Net increase in Federal funds purchased and repurchase agreements	11,158	107,521
Net proceeds from issuance of subordinated notes	0	172,375
Net cash provided by financing activities	2,646,071	2,440,558
Net increase in cash and cash equivalents	1,116,436	375,791
Cash and cash equivalents at beginning of period	1,330,514	153,911
Cash and cash equivalents at end of period	2,446,950	529,702
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	35,849	26,172
Cash paid during the period for income taxes	70,208	51,722
Transfers from loans/leases to OREO and other repossessed assets	$ 1,177	$ 851