Income Taxes - Expenses (Details) - USD ($)  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2017  | 
Aug. 31, 2016  | 
Aug. 31, 2017  | 
Aug. 31, 2016  | 
|
| Continuing Operations | ||||
| Current tax - Federal | $ 43,875 | $ 0 | $ 59,875 | $ 0 | 
| Current tax - State & Local | 312 | 16,365 | 6,189 | 21,100 | 
| Deferred tax | 310,629 | 178,661 | 816,846 | 553,189 | 
| Provision for income taxes at effective rate | 354,816 | 195,026 | 882,910 | 574,289 | 
| Discontinued Operations | ||||
| Current tax - Federal | 0 | 0 | 0 | 0 | 
| Current tax - State & Local | 0 | 0 | 0 | 0 | 
| Deferred tax | 0 | 0 | 0 | (7,704) | 
| Tax - Discontinued Operations | $ 0 | $ 0 | $ 0 | $ (7,704) | 
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- Definition Current Federal Tax Expense (Benefit), Discontinued Operations No definition available. 
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- Definition Current State and Local Tax Expense (Benefit), Discontinued Operations No definition available. 
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- Definition Deferred Income Tax Expense (Benefit), Discontinued Operations No definition available. 
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- Definition Income Tax Expense (Benefit), Discontinued Operations[Abstract] No definition available. 
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- Definition Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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