Segment Information - Reconciliation of Adjusted EBITDA to Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment information
Interest expense	$ (47,714)	$ (221)	$ (849)
Equity in losses of unconsolidated subsidiaries	(3,676)	(526)	(1,577)
Other expense	0	(2)	(415)
Depreciation and amortization	(67,178)	(73,051)	(73,667)
Income before income taxes	231,393	242,630	224,896
Reportable Segment
Segment information
Segment Adjusted EBITDA	376,856	361,334	334,337
Interest expense	(47,714)	(221)	(849)
Equity in losses of unconsolidated subsidiaries	(3,676)	(526)	(1,577)
Other expense	0	(2)	(415)
Stock compensation expense	(2,327)	(651)	(2,141)
Depreciation and amortization	(67,178)	(73,051)	(73,667)
Separation transaction costs	(1,693)	0	0
Nova acquisition costs	(895)	0	0
Income before income taxes	231,393	242,630	224,896
Related Party
Segment information
Interest expense on related party debt	(21,980)	(44,253)	(30,792)
Related Party | Reportable Segment
Segment information
Interest expense on related party debt	$ (21,980)	$ (44,253)	$ (30,792)