Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Income Tax Expense (Detail)

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Income Taxes - Schedule of Income Tax Expense (Detail) (USD $)
12 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2010
Operating Loss Carryforwards [Line Items]      
Current tax expense (benefit), Federal $ 2,033 $ 147,471 $ (390)
Deferred tax expense (benefit), Federal 310,713 59,776 (605,740)
Total, Federal 312,746 207,247 (606,130)
Current tax expense, State & Local 20,907 180,948 85,916
Deferred tax expense, State & Local 144,877 73,346 (172,871)
Total, State & Local 165,784 254,294 (86,955)
Current tax expense, Total 22,940 328,419 85,526
Deferred tax expense, Total 455,590 133,122 (778,611)
Income tax expense (benefit) at effective rate $ 478,530 $ 461,541 $ (693,085)