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Note 7 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
   

Asset/(Liability)

Balance

   

Input Level

 

Trading investments

  $ 12.8       1  

Interest rate swap

  $ 2.8       2  

Senior notes

  $ (252.7 )     2