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Note 8 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Fair Value, Inputs, Level 1 [Member] |  |
Cash and Cash Equivalents, Fair Value Disclosure | $ 100 | $ 100
Fair Value, Inputs, Level 2 [Member] |  |
Cash and Cash Equivalents, Fair Value Disclosure | $ 35,100 | $ 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 No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |