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Note 15 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Standby Letters of Credit [Member] |  |
Letters of Credit Outstanding, Amount | $ 13.7 | $ 12.3

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |