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Note 9 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2011
Operating Leases of Lessee Disclosure [Table Text Block]
     
Amount
 
Years ended December 31:
         
 
2012
 
$
8,572
 
 
2013
   
6,019
 
 
2014
   
4,498
 
 
2015
   
3,410
 
 
2016
   
2,275
 
 
Thereafter
   
2,510
 
Total
   
$
27,284