Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
INTEREST INCOME:
Interest and fees on loans	$ 40,411	$ 39,368	$ 120,700	$ 110,464
Interest on investment securities:
Taxable	6,775	7,298	21,167	22,502
Exempt from federal income tax	10,808	10,457	32,220	29,439
Interest on federal funds sold and interest-bearing deposits in banks	99	40	222	171
Total interest income	58,093	57,163	174,309	162,576
INTEREST EXPENSE:
Interest on deposits	1,112	932	3,197	2,761
Other	254	133	811	281
Total interest expense	1,366	1,065	4,008	3,042
Net interest income	56,727	56,098	170,301	159,534
PROVISION FOR LOAN LOSSES	3,833	2,664	8,219	5,508
Net interest income after provision for loan losses	52,894	53,434	162,082	154,026
NONINTEREST INCOME:
Trust fees	5,066	4,818	14,446	14,289
Service charges on deposit accounts	4,796	4,653	13,614	12,442
ATM, interchange and credit card fees	6,000	5,794	17,521	16,209
Real estate mortgage operations	4,697	3,742	11,849	7,321
Net gain on sale of available-for-sale securities (includes $239 and $136 for the three months ended September 30, 2016 and 2015, respectively, and $1,153 and $380 for the nine months ended September 30, 2016 and 2015, respectively, related to accumulated other comprehensive earnings reclassifications)	239	136	1,153	380
Net gain (loss) on sale of foreclosed assets	(10)	28	343	10
Net gain (loss) on sale of assets	(168)	(11)	271	(11)
Interest on loan recoveries	709	323	1,970	834
Other	823	963	2,243	2,678
Total noninterest income	22,152	20,446	63,410	54,152
NONINTEREST EXPENSE:
Salaries and employee benefits	22,931	21,648	67,668	59,086
Net occupancy expense	2,672	3,050	7,886	7,640
Equipment expense	3,420	3,114	10,186	9,005
FDIC insurance premiums	513	819	2,155	2,316
ATM, interchange and credit card expenses	1,859	1,509	5,352	4,844
Professional and service fees	1,883	1,148	5,099	3,370
Printing, stationery and supplies	536	594	1,504	1,662
Amortization of intangible assets	172	200	570	362
Other	8,017	7,891	23,420	20,837
Total noninterest expense	42,003	39,973	123,840	109,122
EARNINGS BEFORE INCOME TAXES	33,043	33,907	101,652	99,056
INCOME TAX EXPENSE (includes $84 and $48 for the three months ended September 30, 2016 and 2015, respectively, and $404 and $133 for the nine months ended September 30, 2016 and 2015, respectively, related to income tax expense from reclassification items)	7,440	8,021	23,544	23,867
NET EARNINGS	$ 25,603	$ 25,886	$ 78,108	$ 75,189
EARNINGS PER SHARE, BASIC	$ 0.39	$ 0.40	$ 1.18	$ 1.16
EARNINGS PER SHARE, ASSUMING DILUTION	0.39	0.40	1.18	1.16
DIVIDENDS PER SHARE	$ 0.18	$ 0.16	$ 0.52	$ 0.46