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Note 9 - Income Taxes | 12 Months Ended
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Dec. 31, 2023
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | NOTE 9 – INCOME TAXES Deferred taxes are recorded based upon differences between the financial statement and tax basis of assets and liabilities and available carryforwards. Temporary differences and carryforwards which gave rise to a significant portion of deferred tax assets and liabilities as of December 31, 2023 and 2022 are as follows (dollars in thousands):
|  | December 31, |
|  | 2023 |  |  | 2022 |
Deferred tax assets: |  |  |  |  |  |  |  |
Net operating losses |  | $ | 75,727 |  |  | $ | 69,537 |
Fixed asset basis difference |  |  | 4,738 |  |  |  | 4,599 |
Contributions carryover |  |  | 29 |  |  |  | 48 |
Deferred compensation |  |  | 157 |  |  |  | 695 |
Accrued liabilities and other |  |  | 796 |  |  |  | 358 |
Total deferred tax assets |  |  | 81,447 |  |  |  | 75,237 |
Valuation allowance for deferred tax assets |  |  | (81,447 | ) |  |  | (75,237 | )
Net deferred tax asset |  | $ | - |  |  | $ | - |
The change in deferred tax assets resulted from current year net operating losses and changes to future tax deductions resulting from expiring net operating losses, terms of stock compensation plans, fixed assets, and accrued liabilities. A full valuation allowance continues to be recorded given the Company continues to be incurring losses. As of December 31, 2023, the Company had net operating loss (NOL) carryforwards of approximately $334 million for federal income tax purposes and $309 million for California income tax purposes. Such carryforwards expire in varying amounts through the year 2037 and 2043 for federal and California purposes, respectively. For federal losses arising in tax years ending after December 31, 2017, the NOL carryforwards are allowed indefinitely. Use of the carryforward amounts is subject to an annual limitation as a result of a previous ownership change and a tax ownership change that occurred in June of 2021. The Company’s tax years 2020 through 2023 remain subject to examination by the Internal Revenue Service, and tax years 2019 through 2023 remain subject to examination by California tax jurisdictions. In addition, the Company’s loss carryforward amounts are generally subject to examination and adjustment for a period of three years for federal tax purposes and four years for California purposes, beginning when such carryovers are utilized to reduce taxes in a future tax year. A reconciliation of the income tax benefit to the statutory federal income tax rate is as follows (dollars in thousands):
|  | 2023 |  |  | 2022 |
Expected federal income tax benefit at 21% |  | $ | (6,602 | ) |  | $ | (5,205 | )
Increase (decrease) in valuation allowance |  |  | 4,433 |  |  |  | 3,906 |
State income tax |  |  | 11 |  |  |  | 7 |
Expiring carryforwards |  |  | 933 |  |  |  | 577 |
Non-deductible expenses and other |  |  | 1,236 |  |  |  | 722 |
Income tax expense |  | $ | 11 |  |  | $ | 7 |
Because it is more likely than not that the Company will not realize its net deferred tax assets, it has recorded a full valuation allowance against these assets. Accordingly, no deferred tax asset has been recorded in the accompanying balance sheet.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480990/946-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//740/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-21 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 270 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482526/740-270-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-17 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482603/740-30-50-2 + Details
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