Earnings (Loss) Per Share - Basic and Diluted (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic:
Basic (in shares)	28,143,791	27,786,087
Effect of dilutive securities:
Common stock options (in shares)	225,971	0
Total weighted average shares outstanding assuming dilution (in shares)	28,369,762	27,786,087
Shares of common stock issued from the exercise of stock options (in shares)	146,765	103,855