SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases
Operating Lease Cost (Cost resulting from lease payments)	$ 12,738	$ 12,822
Variable Lease Cost (Cost excluded from lease payments)	127	40
Total Lease Cost	12,865	12,862
Operating Lease - Operating Cash Flows (Fixed Payments)	13,761	13,978
Operating Lease - Operating Cash Flows (Liability Reduction)	$ 10,362	$ 9,935
Weighted Average Lease Term - Operating Leases	5 years 11 months 8 days	4 years 10 months 6 days
Weighted Average Discount Rate - Operating Leases	11.66%	11.00%