PROPERTY AND EQUIPMENT, NET - Property and Equipment, Net including Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 19,236		$ 19,236		$ 19,178
Accumulated depreciation and amortization	(15,394)		(15,394)		(14,391)
Property and equipment, net	3,842		3,842		4,787
Depreciation and amortization expense	579	$ 598	1,152	$ 1,157
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	16,063		16,063		16,033
Leasehold improvement
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 3,173		$ 3,173		$ 3,145