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Note 5 - Income Taxes - Tax Reserves (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Taxes | $ 54 | $ 46 | $ 42
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 17 |  | $ 16
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 15 | $ 14 |
Total Tax Liability | 86 |  |
State and Local Jurisdiction [Member] |  |  |
Taxes | 54 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 17 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 15 |  |
Total Tax Liability | 86 |  |
Domestic Tax Authority [Member] |  |  |
Taxes | 0 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 0 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 |  |
Total Tax Liability | 0 |  |
Foreign Tax Authority [Member] |  |  |
Taxes | 0 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 0 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 |  |
Total Tax Liability | $ 0 |  |

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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