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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 4,546,000 | $ 4,849,000
Credits | 1,014,000 | 942,000
Capitalized research and development costs |  |
Other acquired intangibles |  | 6,000
Accruals not currently deductible | 685,000 | 648,000
Depreciation | 58,000 | 75,000
Total deferred tax assets | 6,303,000 | 6,520,000
Valuation allowance for deferred tax assets | (626,000) | (569,000)
Net deferred tax assets | 5,677,000 | 5,951,000
Deferred tax liability: |  |
Acquired intangibles | (170,000) | (170,000)
Net deferred tax assets | $ 5,507,000 | $ 5,781,000

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