LEASES - Narrative (Details)		3 Months Ended
	Jan. 01, 2019 USD ($) item	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Right-of-use assets	$ 750,000	$ 463,000		$ 519,000
Lease liabilities	$ 750,000	475,000		$ 526,000
Operating leases		100,000	$ 100,000
Right-of-use assets obtained in exchange for lease obligations		0	750,000
Minimum
Lessee, Lease, Description [Line Items]
Facility leases | item	1
Renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	5 years
Short-term lease costs		$ 100,000	$ 100,000
ASU 2016-02
Lessee, Lease, Description [Line Items]
Increase (decrease) in deferred rent and prepaid expenses	$ (6,000)
Current prepaid expense	6,000
Cumulative effect adjustment	$ 0