Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Assets
Cash and due from banks	$ 69,421	$ 62,955	$ 53,516
Federal funds sold and interest-bearing accounts	40,165	204,984	73,899
Investment securities available for sale, at fair value	529,509	486,235	312,248
Other investments	12,687	16,828	7,764
Mortgage loans held for sale	110,059	67,278	69,634
Loans, net of unearned income	1,848,759	1,618,454	1,589,267
Purchased loans not covered by FDIC loss share agreements ("purchased non-covered loans")	673,724	448,753
Purchased loans covered by FDIC loss share agreements ("covered loans")	313,589	390,237	417,649
Less: allowance for loan losses	(22,212)	(22,377)	(23,854)
Loans, net	2,813,860	2,435,067	1,983,062
Other real estate owned, net	35,320	33,351	37,978
Purchased, non-covered other real estate owned, net	13,660	4,276
Covered other real estate owned, net	28,883	45,893	52,552
Total other real estate owned, net	77,863	83,520	90,530
Premises and equipment, net	98,752	103,188	65,661
FDIC loss-share receivable	38,233	65,441	81,763
Other intangible assets, net	9,114	6,009	1,972
Goodwill	58,879	35,049	956
Cash value of bank owned life insurance	58,217	49,432	49,095
Other assets	82,649	51,663	28,402
Total assets	3,999,408	3,667,649	2,818,502
Liabilities
Noninterest-bearing	816,517	668,531	475,505
Interest-bearing	2,556,602	2,330,700	1,967,916
Total deposits	3,373,119	2,999,231	2,443,421
Securities sold under agreements to repurchase	32,351	83,516	20,255
Other borrowings	147,409	194,572	5,000
Other liabilities	27,615	18,165	17,201
Subordinated deferrable interest debentures	65,084	55,466	42,269
Total liabilities	3,645,578	3,350,950	2,528,146
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	27,938
Common stock, par value $1; 100,000,000 shares authorized; 28,157,898; 26,461,769 and 25,270,851 issued	28,158	26,462	25,271
Capital surplus	224,142	189,722	165,835
Retained earnings	109,170	83,991	83,025
Accumulated other comprehensive income (loss)	3,974	(294)	(531)
Treasury stock, at cost, 1,383,496; 1,363,342 and 1,363,342 shares	(11,614)	(11,182)	(11,182)
Total stockholders' equity	353,830	316,699	290,356
Total liabilities and stockholders' equity	$ 3,999,408	$ 3,667,649	$ 2,818,502