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Other Accrued Liabilities
 12 Months Ended
Jul. 31, 2012
Other Accrued Liabilities [Abstract]  
Other Accrued Liabilities

 
July 31,
 
 
2012
 
2011
 
       
General cost disallowances
 
$
2,724,474
   
$
3,882,810
 
Other
   
1,208,114
     
2,256,613
 
                 
   
$
3,932,588
   
$
6,139,423
 

Included in other accrued liabilities is an allowance for contract adjustments relating to potential cost disallowances on amounts billed and collected in current and prior years' projects.  The allowance for contract adjustments is recorded for contract disputes and government audits when the amounts are estimatable.