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Note 6 - Accounts Receivable, Net (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

September 30,

  

December 31,

 
  

2023

  

2022

 
  

(in thousands)

 

Trade receivables

 $50,729  $47,046 

Current unbilled receivables

  19,776   20,153 

Allowance for doubtful accounts

  (1,176)  (725)
  $69,329  $66,474