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Note 6 - Accrued Expenses (Tables)
9 Months Ended
Sep. 30, 2014
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities [Table Text Block]
   

September 30,

   

December 31,

 
   

2014

   

2013

 

Salaries, wages and employee benefits

  $ 6,439     $ 4,747  

Federal and state tax accruals

    8,091       3,404  

Other

    3,786       581  

Total accrued expenses

  $ 18,316     $ 8,732