CONSOLIDATED ENTITIES AND ACQUISITIONS - ISP Fund LP (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 31, 2021	Dec. 31, 2020
CONSOLIDATED ENTITIES
Total assets		$ 1,243,507	$ 1,231,497
ISP Fund LP
CONSOLIDATED ENTITIES
Distribution from partnership					$ 110,000
Capital contribution	$ 110,000					$ 300,000
Initial contribution		$ 190,000
Economic interest of the Partnership (in percent)		100.00%
Total liabilities		$ 100	1,600
Net investment-related income (expense) earned (incurred)		4,300	5,200	$ 3,600
Investment Income, Interest		6,300	2,000
Unrealized loss on other equity investments		6,700	9,900	2,400
Lock-up period	36 months
Investment Income, Interest and Dividend				1,800
Realized gain on equity investments		2,400	6,800	$ 10,500
Total assets		$ 311,800	$ 320,600