Earnings Per Share - Reconciliation of Number of Common Shares Used in Calculation of Basic and Diluted Earnings Per Share (EPS) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Antidilutive securities (in shares)	1,143,523	1,002,856	1,145,632	1,042,366
Basic EPS (in shares)	16,708,446	16,674,176	16,697,729	16,647,662
Effect of dilutive securities (in shares)	88,072	27,441	0	21,888
Diluted EPS (in shares)	16,796,518	16,701,617	16,697,729	16,669,550
Basic EPS (in dollars per share)	$ 0.10	$ 0.07	$ (0.21)	$ 0.45
Effect of dilutive securities (in dollars per share)	0.00	0.00	0.00	0.00
Diluted EPS (in dollars per share)	$ 0.10	$ 0.07	$ (0.21)	$ 0.45