Consolidated Statements Of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income	$ 101,922	$ 81,107
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	42,183	56,890
Depreciation and amortization	21,061	17,624
Stock-based compensation expense	6,598	7,260
Tax benefit from stock-based compensation arrangements	188	1,279
Excess tax benefits from stock-based compensation arrangements	(349)	(868)
Net amortization of premium on securities	1,534	4,745
Mortgage servicing rights fair value change and amortization, net	(1,373)	(3,469)
Originations and purchases of mortgage loans held-for-sale	(2,966,058)	(2,688,002)
Proceeds from sales of mortgage loans held-for-sale	3,108,405	2,498,525
Bank owned life insurance income, net of claims	(2,372)	(2,234)
Decrease in trading securities, net	324	1,855
Net increase in brokerage customer receivables	(4,389)	(2,708)
Gains on mortgage loans sold	(64,492)	(59,984)
Gains on available-for-sale securities, net	(328)	(2,334)
Gain on bargain purchases, net	0	(7,418)
(Gain) loss on sales of premises and equipment, net	(375)	702
Net (gain) loss on sales and fair value adjustments of other real estate owned	(1,323)	12,306
Decrease (increase) in accrued interest receivable and other assets, net	29,542	(13,335)
(Decrease) increase in accrued interest payable and other liabilities, net	(50,290)	140,857
Net Cash Provided by Operating Activities	220,408	42,798
Investing Activities:
Proceeds from maturities of available-for-sale securities	169,139	473,331
Proceeds from sales of available-for-sale securities	129,537	2,059,154
Purchases of available-for-sale securities	(240,640)	(2,079,665)
Net cash (paid) received for acquisitions	(9,350)	30,220
Divestiture of operations	(149,100)	0
Proceeds from sales of other real estate owned	76,506	65,902
Proceeds received from the FDIC related to reimbursements on covered assets	47,408	152,594
Net decrease (increase) in interest-bearing deposits with banks	412,638	(113,963)
Net increase in loans	(589,402)	(774,437)
Purchases of premises and equipment, net	(24,239)	(45,533)
Net Cash Used for Investing Activities	(177,503)	(232,397)
Financing Activities:
Increase in deposit accounts	39,575	914,513
Decrease in other borrowings, net	(29,009)	(118,552)
Decrease in Federal Home Loan Bank advances, net	(26,000)	(60,000)
Repayment of subordinated notes	(5,000)	(20,000)
Payoff of secured borrowing	0	(600,000)
Excess tax benefits from stock-based compensation arrangements	349	868
Net proceeds from issuance of Series C preferred stock	0	122,690
Issuance of common shares resulting from exercise of stock options, employee stock purchase plan and conversion of common stock warrants	5,307	12,143
Common stock repurchases	(452)	(7,378)
Dividends paid	(12,066)	(11,575)
Net Cash (Used for) Provided by Financing Activities	(27,296)	232,709
Net Increase in Cash and Cash Equivalents	15,609	43,110
Cash and Cash Equivalents at Beginning of Period	315,028	169,704
Cash and Cash Equivalents at End of Period	$ 330,637	$ 212,814