Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Federal Statutory Rate to Pretax Income (Detail)

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Income Taxes - Summary of Federal Statutory Rate to Pretax Income (Detail) - USD ($)
12 Months Ended
Nov. 30, 2017
Nov. 30, 2016
Income Tax Disclosure [Abstract]    
Tax at Federal Statutory Rate, Amount $ 1,195,000 $ (880,000)
State Income Tax Effect, Amount 179,000 (94,000)
Valuation Allowance Release, Amount   (329,000)
Permanent Disallowances, Amount 159,000 184,000
Deferred Repricing, Amount (343,000)  
Other, Amount 119,000 (40,000)
Foreign tax credits, Amount (108,000) (109,000)
Foreign tax withholding, Amount 108,000 109,000
Income Tax (Benefit) Expense $ 1,308,603 $ (1,159,412)
Tax at Federal Statutory Rate 34.00% 34.00%
State Income Tax Effect, Rate 5.10% 3.60%
Valuation Allowance Release, Rate (0.00%) (12.70%)
Permanent Disallowances, Rate 4.50% (7.30%)
Deferred Repricing, Rate (9.80%)  
Other, Rate 3.40% 1.60%
Foreign tax credits, Rate (3.10%) 4.30%
Foreign tax withholding, Rate 3.10% (4.30%)
Total income taxes, Rate 37.20% 47.70%