Net Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Earnings (Loss) Per Share
Net loss (numerator)	$ (41,805)	$ (37,672)	$ (31,472)	$ (26,811)	$ (27,619)	$ (26,376)	$ (110,949)	$ (80,806)
Weighted average shares (denominator) - basic	28,022			27,972			27,997	25,832
Weighted average shares (denominator) - diluted	28,022			27,972			27,997	25,832
Basic net loss per share (in dollars)	$ (1.49)			$ (0.96)			$ (3.96)	$ (3.13)
Diluted net loss per share (in dollars)	$ (1.49)			$ (0.96)			$ (3.96)	$ (3.13)
Common stock equivalents outstanding							4,986	4,152