Consolidated Entities and Acquisitions - ISP Fund LP (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	May 31, 2021	Dec. 31, 2020
CONSOLIDATED ENTITIES
Total assets		$ 1,188,104		$ 1,188,104		$ 1,231,497
ISP Fund LP
CONSOLIDATED ENTITIES
Distribution from partnership							$ 110,000
Economic interest of the Partnership (in percent)				100.00%
Total assets		298,600		$ 298,600		320,600
Total liabilities		1,100		1,100		$ 1,600
Gain (Loss) on Investments		22,400	$ 10,500	22,700	$ 14,900
Net investment-related income (expense) earned (incurred)		$ 1,100	$ 300	$ 1,200	$ 1,000
Capital contribution	$ 110,000							$ 300,000
Lock-up period	36 months