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Basis of preparation - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021 | [1]
Basis of Presentation [Line Items] |  |  |
Borrowings, interest rate basis | 300 basis points |  |
Negative operating cash flows | $ (5,678) | $ (14,692) | $ (17,501)
Net loss | (23,957) | (47,237) | $ (31,725)
Cash | 34,097 | 23,856 |
Bonds and money market funds | 6,290 | $ 9,214 |
Top of range [member] |  |  |
Basis of Presentation [Line Items] |  |  |
Minimum liquidity requirement amount | 20,000 |  |
Bottom of range [member] |  |  |
Basis of Presentation [Line Items] |  |  |
Minimum liquidity requirement amount | $ 15,000 |  |
[1] | The company voluntarily changed its accounting policy to classify interest paid and received as part of operating activities, see Note 1.

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