Net Income per Share - Reconciliation of Calculation of Basic and Diluted Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Aug. 26, 2016
Earnings Per Share [Abstract]
Net income		$ 3,444	$ 2,824	$ 6,636	$ 7,029
Weighted average common shares outstanding - Basic (in shares)	[1]	10,546	9,318	10,528	9,311
Plus: Potential dilutive common stock equivalents (in shares)		189	150	192	145
Weighted average common shares outstanding - Diluted (in shares)	[1]	10,735	9,468	10,720	9,456
Net income per common share - Basic (in dollars per share)	[1]	$ 0.33	$ 0.30	$ 0.63	$ 0.75
Net income per common share - Diluted (in dollars per share)	[1]	$ 0.32	$ 0.30	$ 0.62	$ 0.74
Stock options and common stock excluded from the income per share calculation as their effect would have been anti-dilutive (in shares)		77	168	66	187
Stock dividend, percentage		10.00%		10.00%		10.00%	10.00%

[1] All share information has been adjusted for the 10% stock dividend paid September 30, 2016.