LEASES - Other Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Right-of-use assets, operating leases	$ 33,723	$ 28,500	$ 0
Right-of-use assets, finance leases	226,619		$ 0
Lease Liabilities, operating leases	37,068	$ 31,000
Lease Liabilities, finance leases	$ 270,090
Weighted-average remaining lease term, operating lease	5 years 3 months 4 days
Weighted-average remaining lease term, finance lease	19 years 18 days
Weighted-average discount rate, operating lease	7.25%
Weighted-average discount rate, finance lease	13.80%
Cash paid for amounts included in the measurement of lease liabilities
Operating cash paid to settle operating lease liabilities	$ 5,913
Right-of-use assets obtained in exchange for lease liabilities	921
Operating cash paid for interest	17,577
Right-of-use assets obtained in exchange for lease liabilities	$ 1,639