Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Feb. 28, 2025	May 31, 2024	Feb. 29, 2024
Summary of Significant Accounting Policies
Accumulated deficit	$ (881,830)	$ (891,531)
Money market fund value	16,200
Restricted cash	$ 0	$ 6,704	$ 6,619

Amount of accumulated undistributed earnings (deficit).

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