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Note 13 - Goodwill and Other Assets (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Jul. 03, 2018
Amortization of Intangible Assets $ 600 $ 1,200    
Goodwill, Ending Balance 72,006   $ 42,518  
Landair Holdings Inc [Member]        
Business Acquisition, Percentage of Voting Interests Acquired       100.00%
Landair Holdings Inc [Member] | Trade Names [Member]        
Acquired Finite-lived Intangible Asset, Residual Value $ 500