LEASES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases
Short-term lease cost	$ 60	$ 76
Operating lease cost	22,634	20,717
Total lease expense	$ 22,694	$ 20,793
Operating Lease, Weighted Average Remaining Lease Term	5 years 240 days 21 hours 36 minutes	3 years 306 days 14 hours 24 minutes
Operating Lease, Weighted Average Discount Rate, Percent	3.85%	3.93%
Operating cash flows for operating leases	$ 22,457	$ 20,477