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License Agreements - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 0 Months Ended | 1 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2014 | Aug. 31, 2013 | Aug. 31, 2014 Agreement | Aug. 31, 2013 Installment | Nov. 30, 2013 | Aug. 31, 2013 Ecuador affiliate [Member] | Oct. 17, 2011 Mexico [Member] Installment | Dec. 31, 2013 Mexico [Member]
License Agreements [Line Items] |  |  |  |  |  |  |  |
Types of agreements |  |  | 2 |  |  |  |  |
Date of notification received related to terminating license agreement |  |  | Aug. 19, 2011 |  |  |  |  |
Date of amendment to license agreement with Mexico |  |  | Oct. 17, 2011 |  |  |  |  |
Total royalty to be received in 37 monthly installments |  |  |  |  |  |  | $ 1,863,000 |
Number of installments |  |  |  |  |  |  | 37 |
Amount of installment to be received related to termination of licenses agreement |  |  |  |  |  |  | 50,000 |
Final payment to be received related to termination of license agreement |  |  |  |  |  |  | 13,000 |
Mexico paid the balance due |  |  |  |  |  |  |  | 563,000
Royalty note receivable | 0 |  | 0 |  | 550,782 |  |  |
Deferred royalty revenue | 0 |  | 0 |  | 551,585 |  |  |
Number of installments received |  |  |  | 9 |  |  |  |
Revenue associated with two agreements |  |  |  | 50,000 |  |  |  |
Accounts receivable, additional allowance for doubtful accounts |  |  |  |  |  | 150,000 |  |
Processing and storage revenues | $ 500,000 | $ 381,000 | $ 1,313,000 | $ 1,134,000 |  |  |  |

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