Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)

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Description of Business and Summary of Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
Nov. 30, 2016
Nov. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total $ 624,223 $ 610,424
Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities 304,142 136,798
Available-for-sale securities 320,081 473,626
Total 624,223 610,424
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities 304,142 136,798
Available-for-sale securities 320,081 473,626
Total $ 624,223 $ 610,424