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Note 8 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Text Block]  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

Fair Value at June 30, 2013 

 

Level 1 

   

Level 2 

   

Level 3 

 

Measured on a recurring basis:

                       

Derivative contracts, net

  $ -     $ (3,356 )   $ -  

Fair Value at December 31, 2012 

 

Level 1 

   

Level 2 

   

Level 3 

 

Measured on a recurring basis:

                       

Derivative contracts, net

  $ -     $ (4,679 )   $ -  
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
   

June 30,
2013

   

December 31, 2012

 

Carrying value

  $ 135,261     $ 130,469  

Fair value

    135,137       134,688