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Note 3 - Fair Value Measurements - Fair Value of Assets Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Cash and cash equivalent | $ 2,371 | $ 1,103
Money market funds | 2,371 | 1,103
Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalent | 2 | 2
Money market funds | 2 | 2
Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Money Market Funds [Member] |  |
Cash and cash equivalent | 2 | 2
Money market funds | 2 | 2
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalent | 2 | 2
Money market funds | 2 | 2
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Savings Account [Member] |  |
Cash and cash equivalent | 2,058 | 1,072
Money market funds | 2,058 | 1,072
Savings Account [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Savings Account [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Savings Account [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Demand Deposits [Member] |  |
Cash and cash equivalent | 311 | 29
Money market funds | 311 | 29
Demand Deposits [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Demand Deposits [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | 0 | 0
Demand Deposits [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalent | 0 | 0
Money market funds | $ 0 | $ 0

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- Definition Fair value portion 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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