Non-controlling Interest - Net income reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Minority Interest [Line Items]
Income (loss) before provision for income taxes attributable to Holdings.	$ (14,149)	$ 11,090	$ (13,424)
Income (loss) before provision for income taxes: NCI	(27,390)	7,038	(8,737)
Income (loss) before provision for income taxes	(41,539)	18,128	(22,161)
(Provision)/benefit for income taxes attributable to Holdings.	(54,873)	(4,980)	(2,192)
(Provision)/benefit for income taxes: NCI	(2,074)	(2,391)	(267)
(Provision)/benefit for income taxes	(56,947)	(7,371)	(2,459)
Net income (loss) attributable to Holdings.	(69,022)	6,110	(15,616)
Net income (loss): NCI	(29,464)	4,647	(9,004)
Net income (loss)	$ (98,486)	$ 10,757	$ (24,620)
RMCO, LLC
Minority Interest [Line Items]
WAO percentage	100.00%	100.00%
RMCO, LLC | Weighted Average
Minority Interest [Line Items]
WAO percentage attributable to Holdings.	59.10%	59.80%	59.80%
WAO percentage	100.00%	100.00%	100.00%
RIHI | RMCO, LLC | Weighted Average
Minority Interest [Line Items]
WAO percentage: NCI	40.90%	40.20%	40.20%