Earnings (Loss) Per Share - Basic and Diluted (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic:
Basic (in shares)	28,490,530	27,950,829	28,421,850	27,980,074
Effect of dilutive securities:
Common stock options (in shares)	0	0	0	0
Total weighted average shares outstanding assuming dilution (in shares)	28,490,530	27,950,829	28,421,850	27,980,074
Shares of common stock issued from the exercise of stock options (in shares)	256,833	13,710	488,303	173,518