PROPERTY AND EQUIPMENT, NET - Schedule of Property and Equipment, Net including Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 18,870		$ 18,870		$ 19,178
Accumulated depreciation and amortization	(15,480)		(15,480)		(14,391)
Property and equipment, net	3,390		3,390		4,787
Depreciation & amortization expense	548	$ 619	1,700	$ 1,776
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	15,659		15,659		16,033
Leasehold improvement
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 3,211		$ 3,211		$ 3,145