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Note 12 - Goodwill and Other Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
                   

Weighted Average

 
    September 30,     December 31,    

Amortization

 
   

2019

   

 2018

   

Period

 

Finite-lived intangibles:

                       

Non-competition agreements

  $ 6.4     $ 0.2       6.9  

Customer relationships

    111.1       75.3       11.6  

Trade names

    3.8       -       2.0  

LDC Network

    10.5       10.5       10.0  

Total finite-lived intangibles

    131.8       86.0          

Less accumulated amortization

    (30.2 )     (20.9 )        

Total identifiable intangible assets, net

  $ 101.6     $ 65.1