CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net earnings	$ 13,494	$ 5,264
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	7,292	3,861
Provision (negative provision) for credit losses	3,137	(6,074)
Gain on sale of other real estate owned	(1,910)	(1,434)
Provision for losses on other real estate owned	1,185	2,981
Gain on sale of leases	(225)	(990)
Gain on sale of premises and equipment		(3)
Gain on sale of securities	(409)
Earned stock compensation	1,764	1,633
Tax effect included in stockholders' equity of restricted stock vesting	(660)	(92)
Decrease in accrued and deferred income taxes, net	8,611	2,849
Decrease in FDIC loss sharing asset	1,635	15,617
(Increase) decrease in other assets	(486)	5,637
Decrease in accrued interest payable and other liabilities	(7,601)	(18,592)
Net cash provided by operating activities	25,827	10,657
Cash flows from investing activities:
Net cash used in acquisitions		(27,908)
Net decrease in loans and leases	113,099	96,668
Proceeds from sale of loans and leases	3,054	17,292
Securities available-for-sale:
Proceeds from maturities and paydowns	100,980	85,683
Proceeds from sales	12,810
Purchases	(132,446)	(136,046)
Net redemptions of Federal Home Loan Bank stock	3,726	2,204
Proceeds from sales of other real estate owned	8,847	13,980
Purchases of premises and equipment, net	(742)	(955)
Proceeds from sales of premises and equipment		37
Net cash provided by investing activities	109,328	50,955
Net increase (decrease) in deposits:
Noninterest-bearing	2,022	99,879
Interest-bearing	(157,913)	(120,662)
Net decrease in borrowings	(1,362)	(47,697)
Redemption of subordinated debentures		(18,558)
Repayment of acquired debt		(128,677)
Restricted stock surrendered	(2,182)	(1,301)
Tax effect included in stockholders' equity of restricted stock vesting	660	92
Cash dividends paid	(9,106)	(6,544)
Net cash used in financing activities	(167,881)	(223,468)
Net decrease in cash and cash equivalents	(32,726)	(161,856)
Cash and cash equivalents, beginning of period	164,404	295,617
Cash and cash equivalents, end of period	131,678	133,761
Supplemental disclosures of cash flow information:
Cash paid for interest	4,063	8,052
Cash received for income taxes	(760)
Loans transferred to other real estate owned	$ 4,980	$ 9,081