XML 47 R34.htm IDEA: XBRL DOCUMENT v3.20.4
Note 4 - Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

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