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Note 10 - Acquisitions - Acquisitions (Details) - USD ($)
$ in Millions
Feb. 28, 2022
Jun. 30, 2022
Dec. 31, 2021
Goodwill   $ 111.7 $ 100.5
Zenith Freight Lines, LLC [Member]      
Consideration $ 86.9    
Accounts receivable 7.2    
Other current assets 1.3    
Property and equipment 28.4    
Other assets 0.3    
Right-of-use assets 28.2    
Intangibles 42.7    
Accounts payable and accrued liabilities (4.2)    
Lease liabilities (28.2)    
Goodwill $ 11.2