Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Denominator:
Weighted average shares of common stock outstanding	104,001,000	104,906,000	103,841,000	104,923,000
Total common shares-basic (in shares)	104,001,000	104,906,000	103,841,000	104,923,000
Effect of dilutive securities:
Options (in shares)	0	0	0	29,000
Restricted stock awards and units (in shares)	0	0	1,521,000	2,715,000
Total common shares-diluted (in shares)	104,001,000	104,906,000	105,362,000	107,667,000