Revenue - Contract with Customer (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2022
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Deferred revenue	$ (221)	$ (66)
Operating Segments | Management/advisory fees
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Contract with customer, receivable	32,069	29,539	$ 30,698
Deferred revenue	(221)	(66)	(945)
Operating Segments | Management/advisory fees | Related party
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Contract with customer, receivable	800	1,200
Operating Segments | Incentive fees
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Contract with customer, receivable	209	40,356	7,570
Operating Segments | Incentive fees | Related party
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Contract with customer, receivable	0	14,900
Operating Segments | Other fees/income
Contract with Customer, Receivable, after Allowance for Credit Loss [Roll Forward]
Contract with customer, receivable	103	526	4,112
Deferred revenue	$ 0	$ 0	$ (422)