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Note 4 - Financing Arrangements (Tables)
12 Months Ended
Dec. 31, 2014
Debt Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
                                         
 

2015

   

2016

   

2017

   

2018

   

2019

   

Thereafter

   

Total

 
  $ 871     $ 648     $ 332     $ 223     $ 3     $ 11     $ 2,088