NOTE 13 - INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred income tax assets:
Allowance for doubtful accounts	$ 8	$ 11
Inventory and product return reserves	467	406
Compensation accruals	1,515	1,233
Accrued liabilities	321	236
Book-over-tax depreciation and amortization	21	33
Foreign net operating loss carryforwards	132	133
U.S. net operating loss carryforwards	2,345	2,761
U.S. credit carryforwards	2,161	2,017
Deferred Tax Assets Gross	6,970	6,830
Valuation Allowance	(6,970)	(6,830)
Total Deferred Income Tax Assets	$ 0	$ 0