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Segment Reporting - Reconciliation of Net Income To Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items]      
Net income $ 274,892 $ 235,514 $ 234,966
Income tax provision 83,471 62,235 62,981
Interest income and other 4,867 (3,918) (6,193)
Interest expense 14,331 10,047 20,294
Adjusted Segment EBITDA 548,373 478,790 455,265
Segment Reconciling Items      
Segment Reporting, Other Significant Reconciling Item [Line Items]      
Net income 274,892 235,514 234,966
Income tax provision 83,471 62,235 62,981
Interest income and other 4,867 (3,918) (6,193)
Interest expense 14,331 10,047 20,294
Unallocated corporate expenses 125,420 124,830 104,457
Segment depreciation expense 39,233 32,876 31,072
Amortization of intangible assets 6,159 9,642 10,818
Segment special charges 0 7,564 0
Remeasurement of acquisition-related contingent consideration 0 0 (3,130)
Adjusted Segment EBITDA $ 548,373 $ 478,790 $ 455,265