LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 138	$ 48
Operating cash flows from finance leases	2,342	1,820
Financing cash flows from finance leases	16,490	10,021
ROU assets obtained in exchange for lease liabilities:
Operating leases	3,400	1,393
Finance leases	$ 8,481	$ 27,348