Concentration of Risk - Additional Information (Details) (USD $)	12 Months Ended
	Nov. 30, 2013
Risks and Uncertainties [Abstract]
Balance insured for cash by Insurance Corporation (up to $250,000)	$ 250,000
Balances insured for securities (up to $500,000)	500,000
Insurance on Cash Balances at Brokerage (limit of $100,000)	100,000
Brokerage firm substantial Insurance coverage beyond Securities Investor Protection Corporation limit ($500,000 limit)	$ 500,000