Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) $ in Thousands	USD ($) $ / shares
Balance at beginning of period at Dec. 31, 2015	$ 61,266
Statement of Stockholders' Equity [Abstract]
Net income	3,091
Other comprehensive income (loss)	1,085
Stock options exercised	7
Cash dividends declared	(1,042)
Balance at end of period at Jun. 30, 2016	$ 64,407
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share | $ / shares	$ 0.38
Balance at beginning of period at Mar. 31, 2016	$ 62,796
Statement of Stockholders' Equity [Abstract]
Net income	1,611
Other comprehensive income (loss)	521
Cash dividends declared	(521)
Balance at end of period at Jun. 30, 2016	$ 64,407
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share | $ / shares	$ 0.19
Balance at beginning of period at Dec. 31, 2016	$ 65,415
Statement of Stockholders' Equity [Abstract]
Net income	3,456
Other comprehensive income (loss)	952
Cash dividends declared	(1,097)
Balance at end of period at Jun. 30, 2017	$ 68,726
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share | $ / shares	$ 0.40
Balance at beginning of period at Mar. 31, 2017	$ 66,927
Statement of Stockholders' Equity [Abstract]
Net income	1,726
Other comprehensive income (loss)	621
Cash dividends declared	(548)
Balance at end of period at Jun. 30, 2017	$ 68,726
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share | $ / shares	$ 0.20