Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Assets
Cash and due from banks	$ 71,387	$ 62,955	$ 50,487
Federal funds sold and interest-bearing accounts	48,677	204,984	81,205
Investment securities available for sale, at fair value	456,713	486,235	324,029
Other investments	9,322	16,828	5,528
Mortgage loans held for sale	51,693	67,278	42,332
Loans, net of unearned income	1,695,382	1,618,454	1,492,753
Purchased loans not covered by FDIC loss share agreements ("purchased non-covered loans")	437,269	448,753
Purchased loans covered by FDIC loss share agreements ("covered loans")	372,694	390,237	460,724
Less: allowance for loan losses	22,744	22,377	23,382
Loans, net	2,482,601	2,435,067	1,930,095
Other real estate owned	33,839	33,351	40,434
Purchased, non-covered other real estate owned	3,864	4,276
Covered other real estate owned	42,636	45,893	77,915
Total other real estate owned	80,339	83,520	118,349
Premises and equipment, net	87,430	103,188	72,340
FDIC loss-share receivable	53,181	65,441	160,979
Intangible assets	5,477	6,009	2,676
Goodwill	35,049	35,049	956
Cash value of bank owned life insurance	49,738	49,432	45,832
Other assets	56,377	51,663	26,843
Total assets	3,487,984	3,667,649	2,861,651
Liabilities
Noninterest-bearing	698,866	668,531	490,961
Interest-bearing	2,311,781	2,330,700	1,999,012
Total deposits	3,010,647	2,999,231	2,489,973
Securities sold under agreements to repurchase	49,974	83,516	22,919
Other borrowings	59,677	194,572	0
Other liabilities	12,028	18,165	22,768
Subordinated deferrable interest debentures	55,628	55,466	42,269
Total liabilities	3,187,954	3,350,950	2,577,929
Commitments and contingencies
Stockholders' Equity
Preferred stock, stated value $1,000; 5,000,000 shares authorized; 0, 28,000 and 28,000 shares issued and outstanding		28,000	27,753
Common stock, par value $1; 100,000,000 shares authorized; 26,535,571, 26,461,769 and 25,238,635 shares issued	26,536	26,462	25,239
Capital surplus	190,513	189,722	165,078
Retained earnings	92,055	83,991	70,554
Accumulated other comprehensive income (loss)	2,374	(294)	6,274
Treasury stock, at cost, 1,376,498, 1,363,342 and 1,362,955 shares	(11,448)	(11,182)	(11,176)
Total stockholders' equity	300,030	316,699	283,722
Total liabilities and stockholders' equity	$ 3,487,984	$ 3,667,649	$ 2,861,651