Segment Reporting - Reconciliation of Net Income To Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income	$ 59,321	$ 64,496
Income tax provision	16,967	20,247
Interest income and other	347	(1,034)
Interest expense	2,642	4,797
Adjusted Segment EBITDA	121,067	125,446
Segment Reconciling Items
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income	59,321	64,496
Income tax provision	16,967	20,247
Interest income and other	347	(1,034)
Interest expense	2,642	4,797
Unallocated corporate expenses	31,338	26,710
Segment depreciation expense	8,184	7,430
Amortization of intangible assets	2,268	2,800
Adjusted Segment EBITDA	$ 121,067	$ 125,446