CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Assets
Cash and due from banks	$ 146,863	$ 118,518	$ 80,142
Federal funds sold and interest-bearing accounts	107,373	272,045	126,157
Investment securities available for sale, at fair value	837,103	783,185	610,330
Other investments	12,802	9,323	8,636
Mortgage loans held for sale, at fair value	97,439	111,182	73,796
Loans, net of unearned income	2,528,007	2,406,877	1,999,420
Purchased loans not covered by FDIC loss-share agreements (“purchased non-covered loans”)	1,129,919	771,554	643,092
Purchased loan pools not covered by FDIC loss-share agreements (“purchased loan pools”)	656,734	592,963	0
Purchased loans covered by FDIC loss-share agreements (“covered loans”)	130,279	137,529	245,745
Less: allowance for loan losses	(21,482)	(21,062)	(21,852)
Loans, net	4,423,457	3,887,861	2,866,405
Other real estate owned, net	14,967	16,147	32,339
Purchased, non-covered other real estate owned, net	15,048	14,333	13,818
Covered other real estate owned, net	3,764	5,011	16,089
Total other real estate owned, net	33,779	35,491	62,246
Premises and equipment, net	124,747	121,639	98,292
FDIC loss-share receivable, net	1,197	6,301	23,312
Other intangible assets, net	21,892	17,058	7,591
Goodwill	121,512	90,082	63,547
Cash value of bank owned life insurance	76,676	64,251	59,212
Other assets	92,931	72,004	73,238
Total assets	6,097,771	5,588,940	4,152,904
Liabilities
Noninterest-bearing	1,529,037	1,329,857	967,015
Interest-bearing	3,701,750	3,549,433	2,513,216
Total deposits	5,230,787	4,879,290	3,480,231
Securities sold under agreements to repurchase	43,741	63,585	55,520
Other borrowings	110,531	39,000	43,851
Other liabilities	28,647	22,432	17,952
Subordinated deferrable interest debentures	83,237	69,874	65,567
Total liabilities	5,496,943	5,074,181	3,663,121
Stockholders’ Equity
Preferred stock, stated value $1,000; 5,000,000 shares authorized; 0 shares issued and outstanding	0	0	0
Common stock, par value $1; 100,000,000 shares authorized; 36,272,185; 33,625,162 and 33,592,585 shares issued	36,272	33,625	33,593
Capital surplus	407,726	337,349	335,578
Retained earnings	163,395	152,820	126,566
Accumulated other comprehensive income	6,411	3,353	6,353
Treasury stock, at cost, 1,434,731; 1,413,777 and 1,410,442 shares	(12,976)	(12,388)	(12,307)
Total stockholders’ equity	600,828	514,759	489,783
Total liabilities and stockholders’ equity	$ 6,097,771	$ 5,588,940	$ 4,152,904