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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Antidilutive securities (in shares)	565,398	1,265,885	565,398	1,221,308
Basic earnings (loss) per share (in shares)	16,966,928	16,700,718	16,902,390	16,692,500
Effect of dilutive securities (in shares)	297,714	0	307,664	0
Diluted earnings (loss) (in shares)	17,264,642	16,700,718	17,210,054	16,692,500
Basic earnings (loss) (in dollars per share)	$ 0.07	$ (0.22)	$ 0.10	$ (0.30)
Effect of dilutive securities (in dollars per share)	0.00	0.00	0.00	0.00
Diluted earnings (loss) (in dollars per share)	$ 0.07	$ (0.22)	$ 0.10	$ (0.30)