Net (Loss) Income Per Share - Computation of Basic and Diluted Net Income per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of common shares outstanding, basic (in shares)	66,696	64,371	66,406	63,627
Weighted average number of common shares outstanding, diluted (in shares)	66,696	65,579	66,406	64,970
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	0	1,087	0	1,130
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Effect of dilutive securities (in shares)	0	121	0	213