Consolidated Statements Of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest income:
Interest and fees on loans	$ 81,527	$ 67,644	$ 64,224
Investment securities:
U.S. Government and agency obligations	1,104	1,186	1,490
Mortgage-backed securities	3,845	3,326	3,459
State and political subdivisions	1,383	1,212	1,171
Other securities	1,075	835	1,026
Other interest-earning assets	206	280	422
Total interest income	89,140	74,483	71,792
Interest expense:
Interest-bearing demand	243	153	146
Money market accounts	1,391	830	620
Savings accounts	74	44	38
Time deposits of $100,000 or more	2,031	910	1,428
Other time deposits	2,229	1,861	1,423
Other borrowings	1,379	984	900
Subordinated debentures	2,350	2,284	2,233
Total interest expense	9,697	7,066	6,788
Net interest income	79,443	67,417	65,004
Provision (credit) for loan losses	4,769	(3,566)	(6,624)
Net interest income after provision (credit) for loan losses	74,674	70,983	71,628
Noninterest income:
Service charges and fees	10,558	9,995	10,222
Other noninterest income	2,561	2,121	898
Gain on sale of bank branches, net			4,378
Gain on sales of mortgage loans, net	2,672	2,179	1,549
Gain on sales/calls of investment securities, net	294	162	1,884
Total noninterest income	16,085	14,457	18,931
Noninterest expense:
Salaries and employee benefits	37,724	34,850	31,830
Occupancy	11,059	9,359	9,193
Data processing	1,886	2,178	1,776
FDIC and other insurance	1,376	1,353	1,305
Other real estate, net	(222)	161	594
Provision for Other Losses	130	(255)	(380)
Provision (credit) for unfunded loan commitments	2,500	2,400
General and administrative	11,293	10,594	12,594
Total noninterest expense	63,246	58,240	56,912
Income before taxes	27,513	27,200	33,647
Taxes on income	9,809	9,793	12,617
Net income	17,704	17,407	21,030
Net income available to common shareholders	$ 17,704	$ 17,407	$ 21,030
Basic earnings per common share	$ 0.93	$ 0.90	$ 1.07
Diluted earnings per common share	0.92	0.90	1.06
Common dividends declared per share	$ 0.32	$ 0.24	$ 0.16