Net Loss Per Share - Computation of basic and diluted net loss per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss	$ (12,414)	$ (8,418)
Weighted average common shares outstanding, diluted (in shares)	95,924	98,581
Weighted average common shares outstanding, basic (in shares)	95,924	98,581
Continuing operations, basic (in dollars per share)	$ (0.13)	$ (0.09)
Continuing operations, diluted (in dollars per share)	$ (0.13)	$ (0.09)