COST OF REVENUE - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Reimbursable expenses	$ 2,039,000	$ 1,957,000	$ 6,398,000	$ 6,158,000
Accounts payable and accrued expenses	31,032,000		31,032,000		$ 33,507,000
Related Party | Aldridge Pite
Related Party Transaction [Line Items]
Reimbursable expenses	200,000	$ 100,000	600,000	$ 300,000
Accounts payable and accrued expenses	$ 0		$ 0