Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2016	$ 104,801	$ 71,695	$ 34,074	$ (368)	$ (600)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,868		3,868
Exercise of stock options	113	113
Share-based compensation	484	484
Dividends on common stock ($0.05 per share 2017 Q2 YTD and $0.06 per share 2018 Q2 YTD )	(803)		(803)
Other comprehensive income (loss)	385				385
Ending balance at Jun. 30, 2017	108,848	72,292	37,139	(368)	(215)
Beginning balance at Mar. 31, 2017					(549)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,919
Other comprehensive income (loss)	334				334
Ending balance at Jun. 30, 2017	108,848	72,292	37,139	(368)	(215)
Beginning balance at Dec. 31, 2017	111,653	72,935	39,822	(368)	(736)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,724		4,724
Exercise of stock options	67	67
Share-based compensation	506	506
Issuance of common stock (249,785 shares)	5,495	5,495
Dividends on common stock ($0.05 per share 2017 Q2 YTD and $0.06 per share 2018 Q2 YTD )	(986)		(986)
Other comprehensive income (loss)	(1,111)				(1,111)
Ending balance at Jun. 30, 2018	120,348	79,003	43,560	(368)	(1,847)
Beginning balance at Mar. 31, 2018					(1,780)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,871
Other comprehensive income (loss)	(67)				(67)
Ending balance at Jun. 30, 2018	$ 120,348	$ 79,003	$ 43,560	$ (368)	$ (1,847)