FINANCE LEASES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) lease	Dec. 31, 2019 USD ($) lease
Lessee, Lease, Description [Line Items]
Number of financing leases | lease	6	10
Net book value of finance lease obligations	$ 18,093	$ 22,860
Accounts receivable	$ 1,892	$ 4,600
Minimum
Lessee, Lease, Description [Line Items]
Finance lease obligation interest rate	4.73%
Monthly installments	36 years
Maximum
Lessee, Lease, Description [Line Items]
Finance lease obligation interest rate	13.00%
Monthly installments	84 years