LEASES - Other Lease Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Weighted-average remaining lease term (years)
Operating leases	9 years 15 days
Finance leases	2 years 7 days
Weighted-average discount rate
Operating leases	8.90%
Finance leases	5.50%
Operating cash flows for operating leases	$ 42,816
Operating cash flows for finance leases	37
Financing cash flows for finance leases	373
Acquisition of operating leases	389,403	$ 0
Lease modification	$ (48,877)