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Note 9 - Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2012
Operating Leases of Lessee Disclosure [Table Text Block]
   
Amount
 
Nine months ended December 31, 2012
 
$
6,197
 
Year ended December 31:
       
2013
   
6,633
 
2014
   
5,077
 
2015
   
3,962
 
2016
   
2,836
 
Thereafter
   
3,476
 
Total
 
$
28,181