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INCOME TAXES (Details 3) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred income tax assets: |  |
Allowance for doubtful accounts | $ 22 | $ 13
Inventory and product return reserves | 477 | 484
Compensation accruals | 2,511 | 2,421
Accrued liabilities | 151 | 202
Book-over-tax depreciation and amortization | 25 | 23
Foreign net operating loss carryforwards | 149 | 22
U.S. net operating loss carryforwards | 4,399 | 3,301
U.S. credit carryforwards | 1,560 | 1,440
Deferred tax assets, gross | 9,294 | 7,906
Valuation allowance | (9,294) | (7,906)
Total deferred income tax assets | $ 0 | $ 0

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