Lines of Credit
 9 Months Ended
Apr. 30, 2013
Lines of Credit [Abstract]  
Lines of Credit
7.
Lines of Credit

Unsecured lines of credit are summarized in the following table.
 
 
 
April 30,
2013
  
July 31,
2012
 
 
 
  
 
Outstanding cash draws, recorded as lines of credit on the accompanying condensed consolidated balance sheets
 
$
6,519,041
  
$
12,309,335
 
Outstanding letters of credit to support operations
  
3,235,300
   
2,615,415
 
 
        
Total amounts used under lines of credit
  
9,754,341
   
14,924,750
 
Remaining amounts available under lines of credit
  
24,614,659
   
19,444,250
 
 
        
Total approved unsecured lines of credit
 
$
34,369,000
  
$
34,369,000
 

Contractual interest rates ranged from 2.5% to 4.3% at April 30, 2013 and 2.5% to 5% at July 31, 2012. The Company's lenders have reaffirmed the lines of credit within the past twelve months.