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Segment Reporting (Tables)
6 Months Ended
Jan. 31, 2013
Segment Reporting [Abstract]  
Segment Reporting
Segment information as of January 31, 2013:
 
 
 
Revenue (1)
      
   
Three months ended
January 31, 2013
   
Six months ended
January 31, 2013
   
Gross Long-
Lived Assets as of January 31, 2013
 
                
United States
 
$
21,888,000
   
$
45,978,000
   
$
29,983,000
 
Foreign countries
   
14,263,000
     
26,995,000
     
5,507,000
 

(1)  
Significant foreign revenues include revenues in Peru ($2.2 million and $5.8 million for the three and six months ended January 31, 2013, respectively), Brazil ($3.7 million and $7.8 million for the three and six months ended January 31, 2013, respectively) and Chile ($3.2 million and $5.8 million for the three and six months ended January 31, 2013, respectively).
 
Segment information as of January 31, 2012:
 
 
 
Revenue (1)
      
   
Three months ended January 31, 2012
   
Six months ended January 31, 2012
   
Gross Long-
Lived Assets as of January 31, 2012
 
                
United States
 
$
24,516,000
   
$
52,946,000
   
$
26,014,000
 
Foreign countries
   
15,657,000
     
29,539,000
     
5,323,000
 

(1)  
Significant foreign revenues include revenues in Peru ($5.5 million and $10.1 million for the three and six months ended January 31, 2012, respectively), Brazil ($3.6 million and $6.9 million for the three and six months ended January 31, 2012, respectively) and Chile ($2.2 million and $4.6 million for the three and six months ended January 31, 2012, respectively).