Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Feb. 29, 2024 |
Nov. 30, 2023 |
Aug. 31, 2023 |
Feb. 28, 2023 |
Nov. 30, 2022 |
Aug. 31, 2022 |
Feb. 29, 2024 |
Feb. 28, 2023 |
May 31, 2023 |
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| Summary of Significant Accounting Policies | |||||||||
| Net loss | $ (11,920) | $ (9,563) | $ (11,571) | $ (13,702) | $ (26,495) | $ (20,991) | $ (33,054) | $ (61,188) | |
| Accumulated deficit | (874,744) | (874,744) | $ (841,690) | ||||||
| Restricted cash | $ 6,619 | $ 5,998 | $ 6,619 | $ 5,998 | $ 6,507 | ||||
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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