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Note 9 - Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2012
Operating Leases of Lessee Disclosure [Table Text Block]
   
Amount
 
Six months ended December 31, 2012
 
$
3,961
 
Year ended December 31:
       
2013
   
7,031
 
2014
   
5,636
 
2015
   
4,458
 
2016
   
3,228
 
Thereafter
   
4,628
 
Total
 
$
28,942