Earnings (Loss) Per Share - Schedule of Potentially Dilutive Instruments (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive shares (in shares)	2,590,403	2,724,176
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive shares (in shares)	517,674	654,016
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive shares (in shares)	2,066,576	2,066,624
Restricted stock awards and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive shares (in shares)	6,153	3,536