Segment Reporting (Tables)
9 Months Ended
Apr. 30, 2013
Segment Reporting [Abstract]  
Segment Reporting
Segment information as of April 30, 2013:
 
Revenue
 
 
 
Three Months
Ended
April 30, 2013
 
Nine Months
Ended
April 30, 2013
 
Gross Long-
Lived Assets as of
April 30, 2013
 
 
 
 
 
United States
 
$
21,754,001
  
$
68,732,966
  
$
30,174,992
 
Foreign countries (1)
  
10,464,922
   36,459,208   
5,527,554
 

(1)Significant foreign revenues included revenues in Peru ($3.1 million and $8.8 million for the three and nine months ended April 30, 2013, respectively), Brazil ($3.7 million and $11.5 million for the three and nine months ended April 30, 2013, respectively) and Chile ($2.3 million and $8.1 million for the three and nine months ended April 30, 2013, respectively).

Segment information as of April 30, 2012:
 
Revenue
 
 
 
Three Months
Ended
April 30, 2012
 
Nine Months
Ended
April 30, 2012
 
Gross Long-
Lived Assets as of
April 30, 2012
 
 
 
 
 
United States
 
$
21,945,087
  
$
74,891,292
  
$
26,975,047
 
Foreign countries (1)
  
14,066,000
   
43,605,000
   
5,236,000
 

(1)Significant foreign revenues include revenues in Peru ($4.0 million and $14.1 million for the three and nine months ended April 30, 2012, respectively), Brazil ($4.4 million and $11.3 million for the three and nine months ended April 30, 2012, respectively) and Chile ($3.2 million and $7.9 million for the three and nine months ended April 30, 2012, respectively).