CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net earnings	$ 36,909	$ 36,821
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	18,349	13,721
Provision for credit losses	(8,486)	22,448
Gain on sale of other real estate owned	(4,542)	(8,334)
Provision for losses on other real estate owned	13,566	15,011
Gain on sale of leases	(1,525)
Loss (gain) on sale of premises and equipment	158	(23)
Gain on branch sale	(297)
Other-than-temporary impairment loss on covered security	1,115
Earned stock compensation	4,631	6,508
Tax effect included in stockholders' equity of restricted stock vesting	(224)	497
Decrease (increase) in accrued and deferred income taxes, net	6,423	(3,689)
Decrease in FDIC loss sharing asset	22,547	27,155
Decrease in other assets	3,262	15,989
Decrease in accrued interest payable and other liabilities	(19,156)	(2,406)
Net cash provided by operating activities	72,730	123,698
Cash flows from investing activities:
Resolution of goodwill matter with FDIC		7,636
Net cash used in acquisitions	(86,931)
Net cash used in branch sale	(119,756)
Net decrease in loans and leases	200,080	324,823
Proceeds from sale of loans and leases	42,128	2,495
Securities available-for-sale:
Proceeds from maturities and paydowns	310,273	137,622
Proceeds from sales	45,639
Purchases	(320,936)	(495,341)
Net redemptions of FHLB stock	6,595	6,698
Proceeds from sales of other real estate owned	43,881	52,823
Purchases of premises and equipment, net	(2,208)	(4,397)
Proceeds from sales of premises and equipment	700	27
Net cash provided by investing activities	119,465	32,386
Net increase (decrease) in deposits:
Noninterest-bearing	339,718	162,691
Interest-bearing	(224,165)	(257,993)
Net decrease in borrowings	(222,736)
Redemption of subordinated debentures	(18,558)
Repayment of acquired debt	(180,796)
Restricted stock surrendered	(1,424)	(427)
Tax effect included in stockholders' equity of restricted stock vesting	224	(497)
Cash dividends paid	(19,669)	(1,089)
Net cash used in financing activities	(327,406)	(97,315)
Net (decrease) increase in cash and cash equivalents	(135,211)	58,769
Cash and cash equivalents, beginning of period	295,617	108,552
Cash and cash equivalents, end of period	160,406	167,321
Supplemental disclosures of cash flow information:
Cash paid for interest	17,457	26,273
Cash paid for income taxes	17,884	29,969
Loans transferred to other real estate owned	$ 32,244	$ 57,266