Net Income (Loss) per Share - Computation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net income (loss)	$ 52,830	$ (122,858)	$ (84,710)
Denominator:
Weighted-average common shares outstanding	70,328,234	56,354,059	45,385,489
Less: weighted-average common shares subject to vesting	(982,744)	(1,566,941)	(1,559,498)
Weighted-average common shares used to compute basic net income (loss) per share	69,345,490	54,787,118	43,825,991
Weighted-average common shares used to compute diluted net income (loss) per share	73,966,267	54,787,118	43,825,991
Net income (loss) per share, basic	$ 0.76	$ (2.24)	$ (1.93)
Net income (loss) per share, diluted	$ 0.71	$ (2.24)	$ (1.93)
Stock Options
Denominator:
Dilutive Effect of Share-based awards	4,054,142
Restricted Stock Units
Denominator:
Dilutive Effect of Share-based awards	566,635