Net Income Per Share - Schedule of Earnings per Share, Basic and Diluted (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of common shares outstanding, basic (in shares)	64,735	60,594	58,860
Weighted average number of common shares outstanding, diluted (in shares)	65,946	62,304	61,008
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Effect of dilutive common share equivalents (in shares)	1,025	1,487	1,678
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Effect of dilutive common share equivalents (in shares)	186	223	470