OTHER INCOME - Summary of Other Income (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($) security
OTHER INCOME
Unrealized and realized gain (loss) on investments (Note 5)	$ 12,662	$ (1,367)	$ 15,543	$ (754)
Foreign currency gain on Blue Chip Swap		5,721	7,993	12,309
Foreign currency gain (loss)	(23,705)	1,412	(58,818)	3,880
Other income (loss), net	935	562	720	565
Total other income (loss)	$ (10,108)	$ 6,328	$ (34,562)	$ 16,000
Number of Blue Chip Swaps | security			2	8