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Note 14 - Subsequent Events (Details Textual) - USD ($)
$ in Millions
1 Months Ended
Oct. 14, 2021
Oct. 08, 2021
Aug. 31, 2021
Proceeds from Coronavirus Economic Relief for Transportation Services (CERTS) Act, Grant     $ 21.0
Subsequent Event [Member]      
Proceeds from Coronavirus Economic Relief for Transportation Services (CERTS) Act, Grant   $ 6.0  
Subsequent Event [Member] | Classic Journeys, LLC [Member]      
Business Acquisition, Percentage of Voting Interests Acquired 80.10%    
Payments to Acquire Businesses, Gross $ 12.8