LEASES - Lease maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2020	$ 36,204
2020		$ 49,298
2021	49,825	49,550
2022	44,131	44,250
2023	40,427	40,549
2024	37,152	37,284
Thereafter	133,504	134,071
Total lease payments	341,243	355,002
Less: imputed interest	(62,898)	(66,321)
Total	$ 278,345	$ 288,681