Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income (loss)	$ (4,382)	$ (8,075)	$ (6,552)	$ (5,399)	$ (12,457)	$ (11,951)
Weighted average shares outstanding - basic and diluted	52,283		39,444		51,980	39,156
Net loss per share - basic and diluted	$ (0.08)		$ (0.17)		$ (0.24)	$ (0.31)