Net Income (Loss) Per Share - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	9,647	1,006	8,617	1,121
Capped call
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	4,167	0	4,167	0
Convertible notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	4,167	0	4,167	0
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	308	232	187	246
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	528	733	72	735
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	455	24	24	83
Employee stock purchase plan shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	22	17	0	57