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Note 17 - Commitments and Contingencies (Details Textual)
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Letters of Credit Outstanding, Amount $ 39.8
Performance and Surety Bonds 17.4
Series A Bond [Member]  
Special Assessment Bond, Total 45.5
Investment With Funding Commitments [Member]  
Equity Method Investment, Commitment Amount 64.7
Payments to Acquire Equity Method Investments $ 45.5