LEASES - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease expense, net	$ 15,038	$ 45,264
Amortization of assets	2,538	5,730
Interest on lease liabilities	520	1,266
Total finance lease expense	3,058	6,996
Lease expense	$ 18,096	$ 52,260