OTHER INVESTMENTS - Other Investments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI
Cost	$ 30,283	$ 30,969
Unrealized gains	49,902	49,424
Unrealized losses	(6,716)	(7,236)
Accrued interest	90	136
Fair value / carrying value	73,559	73,293
Private investments and unlisted equities
Debt and Equity Securities, FV-NI
Cost	27,570	28,470
Unrealized gains	49,902	49,424
Unrealized losses	(5,206)	(6,737)
Accrued interest	0	0
Fair value / carrying value	72,266	71,157
Debt and convertible debt securities
Debt and Equity Securities, FV-NI
Cost	2,713	2,499
Unrealized gains	0	0
Unrealized losses	(1,510)	(499)
Accrued interest	90	136
Fair value / carrying value	$ 1,293	$ 2,136