LEASES - Lease cost (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Lease Cost
Amortization of right-of-use assets		$ 9,000
Interest on lease obligation		1,000
Total finance lease cost		10,000
Total long-term operating lease cost	$ 95,000	88,000
Total short-term operating lease cost	193,000	86,000
Total lease cost	288,000	184,000
Cash paid for amounts included in the measurement of lease obligation:
Operating cash flows from operating leases	95,000	88,000
Financing cash flows from finance leases	0	0
Right-of-use assets obtained in exchange for new operating lease obligations	0	0
Boniface Engineering, Ltd.
Lease Cost
Total lease cost	52,200	50,000.0
Jige International S.A
Lease Cost
Total lease cost	$ 54,000.0	$ 57,000.0