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Note 2 - Allowance for Doubtful Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
   

Years Ended December 31,

 
   

2022

   

2021

 

Balance at the beginning of year

  $ 6,393     $ 7,667  

Provision for bad debts

    2,891       2,260  

Charge-offs

    (1,686 )     (3,653 )

Recoveries

    24       119  

Balance at the end of year

  $ 7,622     $ 6,393