Net Income (Loss) Per Share - Summary of Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss)	$ 73,467	$ (43,148)	$ 149,763	$ (97,760)
Denominator:
Weighted-average common shares outstanding — basic	132,705	122,614	131,198	121,397
Net income (loss) per share — basic	$ 0.55	$ (0.35)	$ 1.14	$ (0.81)
Common stock equivalents	9,417		10,036
Weighted-average common shares outstanding — diluted	142,122	122,614	141,234	121,397
Net income (loss) per share — diluted	$ 0.52	$ (0.35)	$ 1.06	$ (0.81)