SEGMENT INFORMATION - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
SEGMENT INFORMATION
Total segment gross profit	$ 81,104	$ 77,341	$ 178,272	$ 166,970
Costs and expenses
General and administrative expenses	9,093	9,312	20,093	18,243
Depreciation and amortization	115	124	229	246
Operating income	71,896	67,905	157,950	148,481
Fair value changes in equity securities	(509)	(2,191)	291	(1,577)	$ (1,503)
Interest and other income	2,650	1,118	4,912	2,093
Interest and other expense	(8,408)	(1,398)	(17,582)	(2,296)
Income before income taxes	$ 65,629	$ 65,434	$ 145,571	$ 146,701