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Note 11 - Acquisitions (Details Textual) - USD ($)
$ in Millions
Sep. 30, 2022
Sep. 14, 2022
Feb. 28, 2022
Zenith Freight Lines, LLC [Member]      
Business Combination, Purchase Price     $ 86.9
Payments to Acquire Businesses, Gross     87.1
Business Combination, Consideration Transferred, Total     87.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles     42.7
Goodwill, Ending Balance     $ 11.1
Alterri Distribution Center, LLC [Member]      
Business Combination, Consideration Transferred, Total $ 31.1 $ 31.1  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles   0.9  
Goodwill, Ending Balance   $ 8.8