COMMITMENTS AND CONTINGENCIES (Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Lease Cost
Amortization of right-of-use assets	$ 5	$ 5
Interest on lease obligation	1	1
Total finance lease cost	6	6
Total operating lease cost	106	200
Short-term lease cost	127	252
Total lease cost	239	458
Cash paid for amounts included in the measurement of lease obligation:
Operating cash flows from operating leases	106	200
Financing cash flows from finance leases	5	5
Right-of-use assets obtained in exchange for new finance lease obligations	0	0
Right-of-use assets obtained in exchange for new operating lease obligations	$ 0	0
Weighted average remaining lease term for operating leases	4 years 4 months 24 days		4 years 7 months 6 days
Weighted average remaining lease term for finance leases	1 year 8 months 12 days		1 year 10 months 24 days
Weighted average discount rate for operating leases	3.30%		3.20%
Weighted average discount rate for finance leases	4.00%		4.00%
Boniface Engineering, Ltd.
Lease Cost
Total lease cost	$ 56	57
Jige International S.A.
Lease Cost
Total lease cost	$ 28	$ 30