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Note 11 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, after Allowance for Credit Loss $ 6.1 $ 6.7
Variable Interest Entity [Member]    
Financing Receivable, after Allowance for Credit Loss $ 5.7 $ 6.4