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Note 10 - Acquisition (Tables)
9 Months Ended
Sep. 30, 2017
Notes Tables  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Consideration
  $
137.6
 
Accounts receivable
   
9.4
 
Other current assets
   
1.5
 
Property and equipment
   
14.9
 
Intangible
s
   
60.2
 
Accounts payable
   
(3.9
)
Accrued Liabilities
   
(0.2
)
Goodwill
  $
55.7