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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Oct. 31, 2012
Summary of Significant Accounting Policies [Abstract]  
Revenue Recognition Policies
 
Substantially all of the Company's revenue is derived from environmental consulting work. The consulting revenue is principally derived from the sale of labor hours. The consulting work is performed under a mix of fixed price, cost-type, and time and material contracts. Contracts are required from all customers. Revenue is recognized as follows:
 
Contract Type
 
Work Type
 
Revenue Recognition Policy
         
Time and Materials
 
Consulting
 
As incurred at contract rates.
         
Fixed Price
 
Consulting
 
Percentage of completion, approximating the ratio of either total costs or Level of Effort (LOE) hours incurred to date to total estimated costs or LOE hours.
         
Cost-Type
 
Consulting
 
Costs as incurred.  Fixed fee portion is recognized using percentage of completion determined by the percentage of LOE hours incurred to total LOE hours in the respective contracts.
Fair Value of Financial Instruments
     The following table presents the level within the fair value hierarchy at which the Company's financial assets are measured on a recurring basis.
 
Financial assets as of October 31, 2012:
 
                       
   
Level 1
   
Level 2
   
Level 3
   
Total
 
Assets
                       
Investment securities available for sale
 
$
1,445,042
   
$
1,592,764
   
$
---
   
$
3,037,806
 
 
 
                         
Financial assets as of July 31, 2012:
 
                       
   
Level 1
   
Level 2
   
Level 3
   
Total
 
Assets
                       
Investment securities available for sale
 
$
1,353,365
   
$
51,217
   
$
---
   
$
1,404,582