LEASES - Other Information Related to Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 8,144
Operating cash flows from finance leases	135
Financing cash flows from finance leases	73
Right-of-use asset obtained in exchange for operating lease obligation	6,468
Right-of-use asset obtained in exchange for finance lease obligation	$ 0
Operating Lease, Weighted Average Remaining Lease Term	6 years
Finance Lease, Weighted Average Remaining Lease Term	15 years
Weighted average discount rate, operating leases	8.40%
Weighted average discount rate, finance leases	6.20%