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Note 7 - Income Taxes - Significant Components of Deferred Tax Liabilities and Assets (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Property and equipment | $ (1,255,000) | $ (1,055,000)
Total deferred tax liabilities | (1,255,000) | (1,055,000)
Net operating loss carryforwards | 139,000 | 360,000
Accruals and allowances | 167,000 | 41,000
Lease liabilities | 61,000 | 136,000
Tax credits | 3,000 | 4,000
Other – net | 114,000 | 87,000
Capital loss carryover | 646,000 | 646,000
Total deferred tax assets | 1,130,000 | 1,274,000
Valuation allowance | (697,000) | (697,000)
Deferred tax assets net of valuation allowance | 433,000 | 577,000
Net deferred tax liabilities | $ (822,000) | $ (478,000)

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