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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 01, 2012 USD ($) | Dec. 31, 2015 USD ($) | Aug. 31, 2016 USD ($) CompensationPlan | Aug. 31, 2015 USD ($) | Aug. 31, 2016 USD ($) CompensationPlan Deliverables | Aug. 31, 2015 USD ($) | Nov. 30, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Number of deliverables for revenue recognized | Deliverables |  |  |  |  | 2 |  |
Period of doubtful for accounts receivable due from client |  |  |  |  | 21 years |  |
Contracted storage periods option two |  |  |  |  | 21 years |  |
Contracted storage periods option one |  |  |  |  | 1 year |  |
Contracted storage periods option three |  |  |  |  | Lifetime |  |
Deferred revenue recognition period |  |  |  |  | 12 months |  |
Reversal of accounts receivable |  |  |  |  | $ 287,000 |  |
Valuation allowance |  |  | $ 2,630,000 |  | 2,630,000 |  | $ 2,630,000
U.S. Income tax expense |  |  | 990,000 |  | (842,000) |  |
Income tax (expense) benefit |  |  | 898,838 | $ 6,931,423 | 697,103 | $ 6,880,599 |
Income tax benefit, net of foreign taxes |  |  |  | 6,931,000 |  | 6,881,000 |
Foreign income tax expense |  |  | 91,000 | 25,000 | $ 145,000 | 76,000 |
Minimum percentage probability of realized tax benefit on settlement |  |  |  |  | 50.00% |  |
Provisions for interest or penalties related to uncertain tax positions |  |  | 0 | 0 | $ 0 | 0 |
Uncertain tax provisions |  |  | 0 | 0 | 0 | 0 |
Impairment on long lived assets |  |  | $ 0 | 0 | $ 0 | 0 |
Number of employee stock based compensation plan | CompensationPlan |  |  | 2 |  | 2 |  |
Stock-based option compensation expense |  |  | $ 433,000 | 60,000 | $ 821,000 | 305,000 |
Unrealized holding gain (losses), trading securities |  |  | (29,371) | (11,529) | (50,023) | (4,813) |
Unrealized gain (losses) on marketable securities, net of tax |  |  | (14,122) | (82,958) | (114,342) | 143,318 |
Payment warranty |  | $ 50,000 |  |  |  |  |
Increased payment warranty | $ 75,000 |  |  |  |  |  |
Additional payment warranty | $ 10,000 |  |  |  |  |  |
Reserves recorded under programs |  |  | 17,000 |  | $ 17,000 |  | $ 17,000
United States [Member] |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Valuation allowance |  |  |  | $ 6,957,000 |  | $ 6,957,000 |
Accounts Receivable [Member] |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Period of doubtful for accounts receivable due from client |  |  |  |  | 30 days |  |
Other Income and Expense [Member] |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Realized gains on disposition of available for sale securities |  |  | $ 0 |  | $ 7,361 |  |

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