CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings (loss)	$ 50,704	$ (62,016)	$ (9,350)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	20,084	16,722	14,606
Provision for credit losses	26,570	212,492	159,900
Gain from Affinity acquisition			(66,989)
(Gain) loss on sale of other real estate owned	(9,140)	(5,525)	1,308
Provision for losses and valuation adjustments on other real estate owned	16,994	17,660	17,795
(Gain) loss on sale of premises and equipment	(23)	(4)	12
Impairment loss on covered securities		874
Earned stock compensation	7,896	8,496	8,199
Tax effect in stockholders' equity of restricted stock vesting	937	1,840	2,108
Increase (decrease) in accrued and deferred income taxes, net	17,694	(42,562)	(19,274)
Decrease in FDIC loss sharing asset	21,165	67,669
Decrease (increase) in other assets	18,053	27,205	(13,573)
Increase in accrued interest payable and other liabilities	(661)	(8,553)	(18,718)
Net cash provided by operating activities	170,273	234,298	76,024
CASH FLOWS FROM INVESTING ACTIVITIES:
Resolution of goodwill matter with FDIC	7,636
Net cash and cash equivalents acquired in acquisitions		171,366	251,679
Net decrease in loans	450,492	126,813	122,708
Proceeds from sales of loans	2,495	258,128	36,919
Securities available-for-sale:
Proceeds from maturities and paydowns	231,898	215,113	81,783
Purchases	(658,310)	(627,884)	(227,546)
Net redemptions of Federal Home Loan Bank stock	8,934	6,036
Proceeds from sale of other real estate owned	61,954	83,141	42,496
Capitalized costs to complete other real estate owned	(125)	(902)	(1,504)
Purchases of premises and equipment	(5,936)	(5,271)	(3,343)
Proceeds from sale of premises and equipment	27	27	69
Net cash provided by investing activities	99,065	226,567	303,261
Net increase (decrease) in deposits:
Noninterest-bearing	220,237	128,866	131,245
Interest-bearing	(292,482)	(325,922)	(380,067)
Net decrease in borrowings		(387,776)	(213,039)
Net proceeds from issuance of common stock		26,587	148,782
Tax effect in stockholders' equity of restricted stock vesting	(937)	(1,840)	(2,108)
Restricted stock surrendered	(1,465)	(1,831)	(1,775)
Cash dividends paid	(7,626)	(1,445)	(11,145)
Net cash used in financing activities	(82,273)	(563,361)	(328,107)
Net (decrease) increase in cash and cash equivalents	187,065	(102,496)	51,178
Cash and cash equivalents at beginning of year	108,552	211,048	159,870
Cash and cash equivalents at end of year	295,617	108,552	211,048
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	33,000	41,844	57,565
Cash paid (received) during the year for income taxes	19,083	(4,193)	11,426
Supplemental disclosure of noncash investing and financing activities:
Transfer of loans to other real estate owned	$ 68,683	$ 68,447	$ 66,096