Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities
Net loss	$ (181,778)	$ (374,813)	$ (496,678)
Adjustments to net loss to net cash provided by (used in) operating activities
Provision for loan losses	176,931	426,353	504,370
Depreciation and amortization	15,879	18,298	21,730
Increase in valuation allowance on mortgage servicing rights		961	3,808
Loss on fair value of residential mortgage servicing rights	235,820	172,267	74,254
Stock-based compensation expense	5,113	6,373	622
Net gain on sale of Indiana and Georgia retail bank franchises	(21,379)
Gain on interest rate swap		(747)	(534)
Net (gain) loss on the sale of assets	(6,000)	4,722	1,811
Net gain on loan sales	(300,789)	(296,965)	(501,250)
Net loss on sales of mortgage servicing rights	7,903	6,977	3,886
Net gain on securities classified as available-for-sale		(6,689)	(8,556)
Other than temporary impairment losses on securities classified as available-for-sale	24,039	4,991	20,747
Net gain on trading securities	(21,088)	(76,529)	(5,861)
Net loss on transferor interest	5,673	7,847	82,867
Proceeds from sales of loans held-for-sale	28,115,255	27,328,599	31,581,150
Origination and repurchase of mortgage loans held-for-sale, net of principal repayments	(27,178,184)	(27,775,451)	(32,348,474)
Increase in repurchase of mortgage loans with government guarantees, net of claims received	(224,515)	(870,311)	(720,787)
Purchase of trading securities	(131,746)	(899,011)	(716,130)
Increase in accrued interest receivable	(21,307)	(17,099)	(10,833)
Proceeds from sales of trading securities		1,143,279	1,730,910
(Decrease) increase in other assets	(75,813)	125,480	(84,125)
Decrease in accrued interest payable	(3,390)	(13,121)	(9,976)
Net tax effect of stock grants issued			466
Increase (decrease) liability for checks issued	7,353	(11,692)	13,618
Decrease in federal income taxes payable			(36,216)
Increase in payable for mortgage repurchase option	5,190	112,037
Increase in representation and warranty reserve	40,600	13,400	23,500
Increase in other liabilities	117,902	7,544	29,798
Net cash provided by (used in) operating activities	591,669	(963,300)	(845,883)
Investing Activities
Net change in other investments		15,601	18,931
Proceeds from the sale of investment securities available-for-sale		445,445	175,012
Net (purchase) repayment of investment securities available-for-sale	(22,258)	(94,074)	91,139
Net proceeds from sales of portfolio loans	(70,971)	(496,277)	(87,529)
Origination of portfolio loans, net of principal repayments	(988,200)	716,622	716,462
Redemption of Federal Home Loan Bank stock	35,453	36,253
Investment in unconsolidated subsidiaries			1,547
Proceeds from the disposition of repossessed assets	119,633	229,271	216,264
Acquisitions of premises and equipment, net of proceeds	13,439	(10,820)	(11,605)
Proceeds from the sale of mortgage servicing rights	80,392	131,024	119,815
Net proceeds from sale of Indiana and Georgia retail bank franchises	(651,649)
Net cash (used in) provided by investing activities	(1,484,161)	973,045	1,240,036
Financing Activities
Net increase (decrease) in deposit accounts	364,065	(780,370)	937,464
Net decrease in security repurchase agreements		(108,000)
Issuance of junior subordinated debt			50,000
Net increase (decrease) in Federal Home Loan Bank advances	227,917	(174,917)	(1,300,000)
Payment on other long-term debt	(25)	(25)	(25)
Net receipt (disbursement) of payments of loans serviced for others	81,913	(12,285)	(41,894)
Net receipt (disbursement) of escrow payments	7,774	(12,397)	(4,154)
Net tax benefit for stock grants issued			(466)
Dividends paid to preferred stockholders	(11,628)	(13,333)	(10,555)
Issuance of preferred stock		274,984	544,365
Issuance of common stock		687,643	6,696
Net cash provided by (used in) financing activities	670,016	(138,700)	181,431
Net (decrease) increase in cash and cash equivalents	(222,476)	(128,955)	575,584
Beginning cash and cash equivalents	953,534	1,082,489	506,905
Ending cash and cash equivalents	731,058	953,534	1,082,489
Supplemental disclosure of cash flow information:
Loans held-for-investment transferred to repossessed assets	211,519	557,036	642,092
Total interest payments made on deposits and other borrowings	224,278	335,238	487,774
Federal income taxes paid		1,794	1,510
Reclassification of mortgage loans originated for portfolio to mortgage loans held-for-sale	87,704	499,942	139,590
Reclassification of mortgage loans originated held-for-sale then transferred to portfolio loans	16,733	90,746	52,061
Mortgage servicing rights resulting from sale or securitization of loans	254,824	239,395	336,240
Conversion of convertible trust securities to common stock		50,000
Mandatory convertible participating voting preferred stock
Supplemental disclosure of cash flow information:
Conversion of mandatory convertible preferred stock to common stock			271,577
Mandatory convertible non-cumulative perpetual preferred stock
Supplemental disclosure of cash flow information:
Conversion of mandatory convertible preferred stock to common stock		$ 274,984