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

2015

   

2016

   

2017

   

2018

   

2019

   

Thereafter

   

Total

 

Lease payments

  $ 5,874     $ 5,616     $ 4,709     $ 3,805     $ 2,812     $ 5,236     $ 28,052