LEASES - Narrative (Details) - USD ($) $ in Thousands	Apr. 03, 2019	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Right of use asset		$ 3,431	$ 700
Lease liabilities		$ 3,551	$ 700
947 Waterford Road, LLC
Lessee, Lease, Description [Line Items]
Purchase price of sale leaseback	$ 1,000
Initial term of sale leaseback	120 months
300 Park Street, LLC
Lessee, Lease, Description [Line Items]
Purchase price of sale leaseback	$ 2,300
Initial term of sale leaseback	120 months
Oxford Lease
Lessee, Lease, Description [Line Items]
Initial term of sale leaseback	120 months