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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 4,330,000 | $ 4,546,000
Credits | 948,000 | 1,014,000
Capitalized research and development costs |  |
Other acquired intangibles | 37,000 |
Accruals not currently deductible | 597,000 | 685,000
Depreciation | 140,000 | 58,000
Total deferred tax assets | 6,052,000 | 6,303,000
Valuation allowance for deferred tax assets | (545,000) | (626,000)
Net deferred tax assets | 5,507,000 | 5,677,000
Deferred tax liability: |  |
Acquired intangibles |  | (170,000)
Net deferred tax assets | $ 5,507,000 | $ 5,507,000

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