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 income	$ 16,844	$ 15,952	$ 25,570
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of investment security discounts, net	2,435	1,007	560
Depreciation	2,419	2,101	1,689
Intangible amortization	512	622	672
Provision for loan losses, non-covered loans	7,100	10,500	12,150
Provision (recovery) for loan losses, covered loans	2,644	(450)	1,336
Earnings on bank owned life insurance	(191)	(311)	(226)
Net gain on sale of investment securities	(931)	0	0
Net loss (gain) on sale of premises and equipment	11	(74)	15
Net gain on sale of non-covered other real estate owned	(145)	(62)	(20)
Net gain on sale of covered other real estate owned	(2,733)	(6,526)	(1,380)
Net gain on sale of loans held for sale	(3,848)	(1,197)	(1,134)
Origination of loans held for sale	(203,550)	(139,264)	(134,010)
Proceeds from sales of loans held for sale	211,776	129,016	127,400
Valuation adjustment on non-covered other real estate owned	844	272	300
Valuation adjustment on covered other real estate owned	3,704	6,672	858
Bargain purchase gain on acquisitions	0	0	(19,925)
Deferred taxes	(3,198)	2,419	2,130
Change in FDIC indemnification asset	9,126	9,232	(1,884)
Stock-based compensation	811	623	338
Excess tax benefit from stock-based compensation	(31)	(1)	(8)
Net change in assets and liabilities:
Net decrease in other assets	18,745	18,349	13,087
Net increase (decrease) in other liabilities	8,562	2,897	(19,334)
Net cash provided by operating activities	70,906	51,777	8,184
Cash flows from investing activities:
Purchases of investment securities, available for sale	(197,558)	(189,494)	(143,605)
Maturities/calls/principal payments of investment and mortgage-backed securities available for sale	121,402	95,306	53,947
Redemption of Federal Home Loan Bank stock	135	0	0
Net (increase) decrease in non-covered loans and covered loans	(5,553)	91,750	39,733
Purchases of premises and equipment	(1,698)	(2,209)	(14,043)
Proceeds from the sale of premises and equipment	9	537	121
Proceeds from sale of non-covered other real estate owned	2,866	5,181	2,409
Proceeds from sale of covered other real estate owned	21,907	28,760	8,040
Capitalization of non-covered other real estate owned improvements	0	0	(118)
Capitalization of covered other real estate owned improvements	0	(697)	(282)
Cash acquired in merger, net of cash consideration paid	0	0	351,287
Net cash (used in) provided by investing activities	(58,490)	29,134	297,489
Cash flows from financing activities:
Net decrease in deposits	(3,371)	(25,876)	(262,400)
Gross payments on other borrowed funds	0	0	(10,000)
Net decrease in FHLB overnight borrowings	0	0	(50,152)
Redemption of preferred stock	0	(26,380)	0
Repurchase of common stock warrant	0	(1,625)	0
Proceeds from exercise of stock options	301	301	104
Excess tax benefits from stock-based compensation	31	1	8
Dividends paid on preferred stock	0	(38)	(1,320)
Dividends paid on common stock	(7,717)	(3,068)	(2,067)
Net cash used in financing activities	(10,756)	(56,685)	(325,827)
Net change in cash and cash equivalents	1,660	24,226	(20,154)
Cash and cash equivalents at beginning of period	105,913	81,687	101,841
Cash and cash equivalents at end of period	107,573	105,913	81,687
Cash paid during the period for:
Interest	7,350	10,285	11,772
Income taxes	1,500	7,400	14,000
Supplemental disclosures about noncash investing and financing activities:
Change in fair value of investment securities available for sale, net of taxes	1,534	2,956	(56)
Transfer of non-covered loans to non-covered other real estate owned	4,612	3,245	2,144
Transfer of covered loans to covered other real estate owned	9,716	25,065	18,792
Acquisitions:
Assets acquired	0	0	998,302
Liabilities assumed	$ 0	$ 0	$ 985,351