Net Loss per Share - Schedule of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net loss attributable to stockholders	$ (18,527)	$ (52,293)	$ (46,682)
Undistributed losses allocated to stockholders	$ (18,527)	$ (52,293)	$ (46,682)
Denominator:
Weighted average number of shares outstanding, basic (in shares)	90,218,386	88,345,312	88,154,830
Weighted average additional shares assuming conversion of potential shares of common stock (in shares)	0	0	0
Weighted average shares of common stock outstanding - diluted (in shares)	90,218,386	88,345,312	88,154,830
Net loss per share attributable to stockholders, basic (in USD per share)	$ (0.21)	$ (0.59)	$ (0.53)
Net loss per share attributable to stockholders, diluted (in USD per share)	$ (0.21)	$ (0.59)	$ (0.53)