CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings (loss)	$ 56,801	$ 50,704	$ (62,016)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	25,792	20,084	16,722
Provision (negative provision) for credit losses	(12,819)	26,570	212,492
Gain on sale of other real estate owned	(5,786)	(9,140)	(5,525)
Provision for losses and valuation adjustments on other real estate owned	14,333	16,994	17,660
Gain on sale of leases	(2,767)
(Gain) loss on sale of premises and equipment	155	(23)	(4)
Gain on branch sale	(297)
Gain on sale of securities	(1,239)
Other-than-temporary impairment losses on covered securities	1,115		874
Earned stock compensation	5,999	7,896	8,496
Tax effect included in stockholders' equity of restricted stock vesting	(283)	937	1,840
(Decrease) increase in accrued and deferred income taxes, net	(3,737)	17,694	(42,562)
Decrease in FDIC loss sharing asset	37,712	21,165	67,669
Decrease in other assets	18,754	18,053	27,205
Decrease in accrued interest payable and other liabilities	(15,753)	(661)	(8,553)
Net cash provided by operating activities	117,980	170,273	234,298
CASH FLOWS FROM INVESTING ACTIVITIES:
Resolution of goodwill matter with FDIC		7,636
Net cash and cash equivalents (used) acquired in acquisitions	(87,098)		171,366
Net cash used in branch sale	(119,756)
Net decrease in loans and leases	232,549	450,492	126,813
Proceeds from sales of loans and leases	58,691	2,495	258,128
Securities available-for-sale:
Proceeds from maturities and paydowns	415,854	231,898	215,113
Proceeds from sales	90,745
Purchases	(485,860)	(658,310)	(627,884)
Net redemptions of Federal Home Loan Bank stock	10,392	8,934	6,036
Proceeds from sale of other real estate owned	59,614	61,954	83,141
Capitalized costs to complete other real estate owned		(125)	(902)
Purchases of premises and equipment, net	(4,914)	(5,936)	(5,271)
Proceeds from sales of premises and equipment	704	27	27
Net cash provided by investing activities	170,921	99,065	226,567
Net increase (decrease) in deposits:
Noninterest-bearing	271,934	220,237	128,866
Interest-bearing	(234,608)	(292,482)	(325,922)
Net decrease in borrowings	(228,107)		(387,776)
Redemption of subordinated debentures	(18,558)
Repayment of acquired debt	(180,796)
Net proceeds from issuance of common stock			26,587
Tax effect included in stockholders' equity of restricted stock vesting	283	(937)	(1,840)
Restricted stock surrendered	(1,475)	(1,465)	(1,831)
Cash dividends paid	(28,787)	(7,626)	(1,445)
Net cash used in financing activities	(420,114)	(82,273)	(563,361)
Net (decrease) increase in cash and cash equivalents	(131,213)	187,065	(102,496)
Cash and cash equivalents at beginning of year	295,617	108,552	211,048
Cash and cash equivalents at end of year	164,404	295,617	108,552
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	21,614	33,000	41,844
Cash paid (received) during the year for income taxes	40,772	19,083	(4,193)
Supplemental disclosure of noncash investing and financing activities:
Transfer of loans to other real estate owned	$ 40,207	$ 68,683	$ 68,447