SEGMENT INFORMATION - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
SEGMENT INFORMATION
Total segment gross profit	$ 69,450	$ 94,629	$ 236,423	$ 265,981
Costs and expenses
General and administrative expenses	7,554	7,129	25,797	21,272
Depreciation and amortization	122	93	371	278
Operating income	61,774	87,407	210,255	244,431
Fair value changes in equity securities	356	176	(1,221)	4,035
Interest and other income	3,571	819	5,665	2,227
Interest and other expense	(8,814)	(1,908)	(11,110)	(4,873)
Income before income taxes	$ 56,887	$ 86,494	$ 203,589	$ 245,820