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Note 7 - Deferred Compensation and Long-term Incentive Plans (Tables)
3 Months Ended
Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits by Title of Individual and Type of Deferred Compensation [Table Text Block]
   

Three Months Ended

March 31,

 
   

2014

   

2013

 

Compensation expense

  $ 700     $ 334