Common Stock and Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Mar. 11, 2013
Common Stock and Earnings Per Share [Abstract]
Net income	$ 4,483	$ 3,800	$ 11,013	$ 9,699
Shares Used in Computing Basic and Diluted Earnings per Share [Abstract]
Weighted average common shares, basic (in shares)	12,968,540	12,912,833	12,955,602	12,895,144
Effect of dilutive securities [Abstract]
Employee stock-based compensation (in shares)	2,131	196	1,506	120
Weighted average common shares, diluted (in shares)	12,970,671	12,913,029	12,957,108	12,895,264
Stock Repurchase Program [Abstract]
Number of shares authorized to be repurchased under the stock repurchase program (in shares)					1,200,000
Number of shares repurchased under the stock repurchase program (in shares)	0	0	0	0
Number of remaining shares authorized to be repurchased under the stock repurchase program (in shares)	618,004		618,004