Annual report pursuant to Section 13 and 15(d)

Marketable Securities and Other Investments (Details)

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Marketable Securities and Other Investments (Details) (USD $)
12 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Marketable Securities and Other Investment (Textual) [Abstract]    
Marketable securities   $ 1,002,000
Interest rate period for marketable security 7 days  
Marketable securities consisting of trading securities 20,760 0
Unrealized holding gain or loss 7,100  
Other Investments 0 6,400
Unrealized holding gain or loss recorded as a component of stockholders equity 0 0
Marketable Securities and Other Investments (Additional Textual) [Abstract]    
Demand notes redemption period 7 days  
Variable Rate Demand Obligation [Member]
   
Marketable Securities and Other Investment (Textual) [Abstract]    
Marketable securities $ 0 $ 1,002,000