Summary of Fair Value of Convertible Note Redemption Provision Derivative Liability (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
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Aug. 31, 2020 |
Aug. 31, 2019 |
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| Net Proceeds | $ 25,000 | |
| Derivative Liability | 1,443 | |
| Convertible Note Redemption Provision Derivative Liability [Member] | Inception date June 2018 Note, November 15, 2018 [Member] | ||
| Net Proceeds | 5,000 | |
| Inception Date | 1,285 | |
| Derivative Liability | 373 | |
| Convertible Note Redemption Provision Derivative Liability [Member] | Inception date January 2019 Note, January 30, 2019 [Member] | ||
| Net Proceeds | 5,000 | |
| Inception Date | $ 1,465 | |
| Derivative Liability | $ 1,070 | |
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- Definition Amount of embedded derivative liability as on inception date. No definition available.
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- Definition Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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