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Note 4 - Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

2022

  

2021

 

Billed receivables

 $273.7  $268.0 

Unbilled receivables

  30.7   47.3 

Total receivables

  304.4   315.3 

Less allowance for doubtful accounts

  (14.3)  (15.4)

Accounts receivable, net

 $290.1  $299.9