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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) (USD $)
Jul. 31, 2012
Jul. 31, 2011
Marketable securities -    
available-for-sale $ 2,215,209 $ 1,332,460
Held-to-maturity 178,176 575,937
Investments, Fair Value Disclosure 2,393,385 1,908,397
Fair Value, Inputs, Level 1 [Member]
   
Marketable securities -    
available-for-sale 2,215,209 1,332,460
Held-to-maturity 178,176 575,937
Investments, Fair Value Disclosure 2,393,385 1,908,397
Fair Value, Inputs, Level 2 [Member]
   
Marketable securities -    
available-for-sale 0 0
Held-to-maturity 0 0
Investments, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member]
   
Marketable securities -    
available-for-sale 0 0
Held-to-maturity 0 0
Investments, Fair Value Disclosure $ 0 $ 0