Loss per Share - Reconciliation of Basic and Diluted Loss per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ (1,956)	$ (1,908)
Weighted-average common shares—outstanding, basic	21,566	18,228
Weighted-average common shares—outstanding, diluted	21,566	18,228
Net loss per common share, basic	$ (0.09)	$ (0.10)
Net loss per common share, diluted	$ (0.09)	$ (0.10)