Investments Variable Interest Entity (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Investments	[1]	$ 320,883	$ 258,970
Other assets	[1]	29,225	27,543
Total assets		727,787	736,554
Due to brokers	[1]	1,325	201
Other liabilities and accrued expenses	[1]	14,832	21,657
Total liabilities		215,235	243,907
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP [Member]
Variable Interest Entity [Line Items]
Investments		68,244	159,931
Due from brokers ($145 and $1,743)		101	13
Other assets		76	644
Total assets		68,421	160,588
Due to brokers		102	119
Other liabilities and accrued expenses		347	449
Total liabilities		449	568
Net assets		67,972	160,020
Attributable to the Company		46,429	48,601
Attributable to noncontrolling interests		$ 21,543	$ 111,419

[1] Amounts in parentheses represent the aggregate balances at September 30, 2024 and December 31, 2023 attributable to variable interest entities consolidated by the Company.