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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, after Allowance for Credit Loss $ 9.2 $ 9.6
Variable Interest Entity [Member]    
Financing Receivable, after Allowance for Credit Loss $ 7.9 $ 8.2