NOTE 12 - INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax assets:
Allowance for doubtful accounts	$ 10	$ 13
Inventory and product return reserves	573	464
Compensation accruals	1,973	1,723
Accrued liabilities	179	129
Book-over-tax depreciation and amortization	91	25
Foreign net operating loss carryforwards	53	3
U.S. net operating loss carryforwards	3,739	2,904
U.S. credit carryforwards	2,345	2,280
Deferred tax assets, gross	8,963	7,541
Valuation allowance	(8,963)	(7,541)
Total deferred income tax assets	$ 0	$ 0

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