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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Feb. 02, 2016 USD ($) | Dec. 31, 2005 USD ($) | Feb. 29, 2016 USD ($) CompensationPlan Deliverables | Feb. 28, 2015 USD ($) | Nov. 30, 2015 USD ($)
Accounting Policies [Abstract] |  |  |  |  |
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 |  |
Valuation allowance |  |  | $ 2,630,000 |  | $ 2,630,000
U.S. Income tax expense |  |  | 0 | $ 0 |
Foreign income tax expense |  |  | $ 0 | 25,000 |
Minimum percentage probability of realized tax benefit on settlement |  |  | 50.00% |  |
Provisions for interest or penalties related to uncertain tax positions |  |  | $ 0 | 0 |
Uncertain tax provisions |  |  | 0 | 0 |
Impairment on long lived assets |  |  | $ 0 | 0 |
Number of employee stock based compensation plan | CompensationPlan |  |  | 3 |  |
Stock option compensation expense |  |  | $ 252,000 | 191,000 |
Unrealized holding gain (losses), trading securities |  |  | (19,800) | (4,400) |
Unrealized gain (losses) on marketable securities, net of tax |  |  | (93,727) | $ 0 |
Payment warranty |  | $ 50,000 |  |  |
Increased payment warranty | $ 75,000 |  |  |  |
Additional payment warranty | $ 10,000 |  |  |  |
Reserves recorded under programs |  |  | $ 17,000 |  | $ 17,000

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