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Note 14 - Income Tax (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Percent, Total | (33.50%) | (3.70%)
Research and Development Tax Credit Carryforwards Offset by Reserve for Uncertain Tax Positions | $ 800 |
Deferred Tax Assets, Tax Credit Carryforwards, Total | 2,700 |
Deferred Tax Assets, Valuation Allowance | 15,222 | $ 14,506
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 700 | 200
Cash and Cash Equivalents, at Carrying Value, Total | 4,283 | 4,508
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 400 |
Non-US [Member] | Subsidiaries [Member] |  |
Cash and Cash Equivalents, at Carrying Value, Total | 2,100 | $ 2,600
Expire 2024 [Member] |  |
Deferred Tax Assets, Tax Credit Carryforwards, Research | 7,800 |
State and Local Jurisdiction [Member] | Expire between 2024 and 2043 [Member] |  |
Operating Loss Carryforwards | 6,300 |
Foreign Tax Authority [Member] |  |
Operating Loss Carryforwards | 7,800 |
Foreign Tax Authority [Member] | Research Tax Credit Carryforward [Member] |  |
Tax Credit Carryforward, Amount | $ 400 |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-8 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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