Net Income (Loss) per Share of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Numerator for earnings per share:
Net loss that is available to common shareholders	$ (4,542)	$ (2,961)
Denominator for basic earnings per share:
Weighted average shares outstanding	22,262,565	22,086,640
Denominator for diluted earnings per share:
Effect of stock options and restricted stock units	0	0
Adjusted weighted average shares and assumed conversions	22,262,565	22,086,640
Basic loss per share	$ (0.20)	$ (0.13)
Diluted loss per share	$ (0.20)	$ (0.13)
Anti-dilutive shares excluded from computation of diluted loss per share	1,483,470	1,167,398

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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