LEASES AND RELATED PARTY LEASES - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
ROU assets	$ 84,543	$ 83,635
Current lease liabilities	14,775	12,818
Non-current lease liabilities	90,329	88,118
Total lease liabilities	$ 105,104	$ 100,936
Leased facilities
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (in years)	10 years 4 months 24 days	11 years 7 months 6 days
Weighted average discount rate	5.10%	4.60%
Leased vehicles
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (in years)	2 years 1 month 6 days	2 years 3 months 18 days
Weighted average discount rate	2.60%	2.30%