LEASES - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) tranche	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Number of tranches | tranche			4
Rent expense charged to operations under lease agreements | $	$ 736	$ 781	$ 1,477	$ 1,590
Lessee, Operating Lease, Tranche One
Lessee, Lease, Description [Line Items]
Discount rate	3.45%		3.45%
Lessee, Operating Lease, Tranche One | Minimum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	1 year		1 year
Lessee, Operating Lease, Tranche One | Maximum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	2 years		2 years
Lessee, Operating Lease, Tranche Two
Lessee, Lease, Description [Line Items]
Discount rate	4.04%		4.04%
Lessee, Operating Lease, Tranche Two | Minimum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	3 years		3 years
Lessee, Operating Lease, Tranche Two | Maximum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	4 years		4 years
Lessee, Operating Lease, Tranche Three
Lessee, Lease, Description [Line Items]
Discount rate	4.38%		4.38%
Lessee, Operating Lease, Tranche Three | Minimum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	5 years		5 years
Lessee, Operating Lease, Tranche Three | Maximum
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	9 years		9 years
Lessee, Operating Lease, Tranche Four
Lessee, Lease, Description [Line Items]
Term of contract for operating leases	10 years		10 years
Discount rate	5.10%		5.10%