LEASES - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating lease expense:
Operating lease expense	$ 1,170	$ 1,324	$ 2,407	$ 2,664
Finance lease expense:
Amortization of leased assets	101	207	324	428
Interest on lease liabilities	1	31	10	69
Total finance lease expense	102	238	334	497
Total lease expense	$ 1,272	$ 1,562	$ 2,741	$ 3,161