LEASES - NARRATIVE (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Leases
Operating Lease, Initial Direct Cost Expense, over Term	$ 300
Operating lease liabilities	3,403		$ 3,814
Right-of-use assets	2,105		$ 2,202
Prepaid Expenses and Other Current Assets [Member]
Leases
Operating Lease, Initial Direct Cost Expense, over Term	100
Other Assets [Member]
Leases
Operating Lease, Initial Direct Cost Expense, over Term	$ 200
SF Office
Leases
Area | ft²		5,000
Operating lease, borrowing rate		3.50%
Operating lease liabilities		$ 600
Right-of-use assets		$ 600