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Note 2 - Acquisitions (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Business Acquisition, Pro Forma Information [Table Text Block]
    
  Three Months Ended 
  March 31, 2021 

Revenue, net

 $113,665 

Net earnings

  3,429 

Earnings per Class A common share - basic and diluted

  0.26 

Earnings per Class B common share - basic and diluted

  0.28