CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (loss) [Member]
Balance at Dec. 31, 2017	$ 255,942	$ 111,138	$ 2,937	$ 144,197	$ (2,330)
Balance (in shares) at Dec. 31, 2017		15,223,360
Net income	6,710			6,710
Other comprehensive income (loss), net of tax	(5,347)				(5,347)
Exercise of stock options	382	$ 460	(78)
Exercise of stock options (in shares)		23,420
Stock compensation costs	76		76
Stock issued-acquisition	(6)		(6)
Cash dividends	(2,437)			(2,437)
Balance at Mar. 31, 2018	255,320	$ 111,598	2,929	148,470	(7,677)
Balance (in shares) at Mar. 31, 2018		15,246,780
Balance at Dec. 31, 2018	273,024	$ 112,507	3,066	164,117	(6,666)
Balance (in shares) at Dec. 31, 2018		15,300,460
Net income	8,895			8,895
Other comprehensive income (loss), net of tax	4,340				4,340
Exercise of stock options	412	$ 494	(82)
Exercise of stock options (in shares)		27,570
Stock compensation costs	151		151
Cash dividends	(2,754)			(2,754)
Balance at Mar. 31, 2019	$ 284,068	$ 113,001	$ 3,135	$ 170,258	$ (2,326)
Balance (in shares) at Mar. 31, 2019		15,328,030