Net Loss per Share - Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net income (loss) - basic and diluted	$ (27,576)	$ 6,230	$ (67,735)	$ (27,721)
Denominator:
Weighted average number of common shares outstanding - basic	47,614	46,737	47,346	46,255
Common stock equivalents from outstanding common stock options		2,210
Common stock equivalents from unvested restricted stock units		365
Common stock equivalents for ESPP		8
Weighted average number of common shares outstanding - diluted	47,614	49,320	47,346	46,255
Basic net (loss) income per share (in dollar per share)	$ (0.58)	$ 0.13	$ (1.43)	$ (0.60)
Diluted net (loss) income per share (in dollar per share)	$ (0.58)	$ 0.13	$ (1.43)	$ (0.60)