Non-controlling Interest - Net income (loss) reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Noncontrolling Interest [Line Items]
Income (loss) before provision for income taxes attributable to Holdings	$ 3,552			$ (6,866)			$ 6,284	$ (3,694)
Income (loss) before provision for income taxes attributable to NCI	3,369			(22,126)			4,197	(19,919)
Income (loss) before provision for income taxes	6,921			(28,992)			10,481	(23,613)
(Provision) / benefit for income taxes attributable to Holdings	(2,586)			(52,588)			(4,966)	(54,421)
(Provision) / benefit for income taxes attributable to NCI	(921)			(1,092)			(1,518)	(2,073)
(Provision) / benefit for income taxes	(3,507)			(53,680)			(6,484)	(56,494)
Net income (loss) attributable to Holdings	966			(59,454)			1,318	(58,115)
Net income (loss) attributable to NCI	2,448			(23,218)			2,679	(21,992)
Net income (loss)	$ 3,414	$ 6,190	$ (5,607)	$ (82,672)	$ 3,244	$ (679)	$ 3,997	$ (80,107)
RMCO, LLC
Noncontrolling Interest [Line Items]
WAO percentage	100.00%						100.00%		100.00%
RMCO, LLC | Weighted Average
Noncontrolling Interest [Line Items]
WAO percentage of Holdings	60.00%			59.10%			59.90%	59.00%
WAO percentage	100.00%			100.00%			100.00%	100.00%
RIHI | RMCO, LLC | Weighted Average
Noncontrolling Interest [Line Items]
WAO percentage: NCI	40.00%			40.90%			40.10%	41.00%