DETAILS OF CERTAIN FINANCIAL STATEMENT COMPONENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Inventories
Raw materials	$ 743	$ 738
Work-in-process	290	357
Finished goods	162	173
Total inventories	1,195	1,268
Property, plant and equipment, net
Property and equipment, Gross	1,782	1,428
Less: accumulated depreciation	(1,257)	(1,118)
Total property, plant and equipment, net	525	310
Depreciation expense	128	57
Retired or disposed of property, plant and equipment, cost	0	0
Intangibles, net
Total intangibles, net	69	44
Amortization expense	17	9
Future amortization
2018	19
2019	17
2020	16
2021	14
2022	3
Accrued expenses and other accrued liabilities
Accrued warranty	3	2
Accrued wages and benefits	185	195
Accrued taxes, other than income taxes	4	5
Accrued vacation	88	77
Accrued other	65	55
Total accrued liabilities	345	334
Patents and trademarks
Intangibles, net
Intangibles, gross	402	360
Less: accumulated amortization	(333)	(316)
Total intangibles, net	69	44
Furniture, machinery and equipment
Property, plant and equipment, net
Property and equipment, Gross	1,231	914
Leasehold improvements
Property, plant and equipment, net
Property and equipment, Gross	$ 551	$ 514