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Note 4 - Accounts Receivable
12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Accounts and Nontrade Receivable [Text Block]

4.    Accounts Receivable:

 

Accounts receivable, net consisted of the following at December 31:

 

  

2020

  

2019

 

Billed receivables

 $380.5  $372.7 

Unbilled receivables

  69.6   80.6 

Total receivables

  450.1   453.3 

Less allowance for doubtful accounts

  (17.7)  (11.7)

Accounts receivable, net

 $432.4  $441.6