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Note 9 - Debt Outstanding (Details Textual) - The 2026 Notes [Member] | Oct. 20, 2021 USD ($)
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Debt Instrument, Interest Rate, Stated Percentage | 4.875%
Debt Instrument, Face Amount | $ 40,250,000
Proceeds from Issuance of Debt | $ 38,607,000
Debt Instrument, Maturity Date | Dec. 31, 2026

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