Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Shares outstanding (weighted average) (in shares)	4,823,697	4,590,480	4,755,018	4,584,536
Shares held by Rabbi Trust (in shares)	96,736	0	96,736	0
Share liability under deferred compensation agreement (in shares)	(96,736)	0	(96,736)	0
Net earnings applicable to common stockholders	$ 1,204	$ 1,109	$ 3,215	$ 2,683
Net income applicable to common stockholders and assumed conversions	$ 1,204	$ 1,109	$ 3,215	$ 2,683
Basic earnings per share (in shares)	4,823,697	4,590,480	4,755,018	4,584,536
Unvested stock awards (in shares)	44,837	26,561	39,651	25,640
Diluted earnings per share (in shares)	4,868,534	4,617,041	4,794,669	4,610,176
Basic earnings per share (usd per share)	$ 0.25	$ 0.24	$ 0.68	$ 0.59
Diluted earnings per share (usd per share)	$ 0.25	$ 0.24	$ 0.67	$ 0.58
Shares of common stock outstanding not included in the computation of diluted EPS (in shares)	5,845	57,038	14,323	64,238