Short-term Investments and Fair Value Measurements - Summary of Amortized Cost and Estimated Fair Value of Investment Securities Classified as Held-to-maturity (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Feb. 29, 2024
Short-Term Investments [Abstract]
Investment securities due in less than one year, cost or amortized cost	$ 5,475	$ 29,325
Investment securities due in less than one year, gross unrealized holding gains	4	0
Investment securities due in less than one year, gross unrealised holding losses	0	45
Investment securities due in less than one year, estimated fair value	$ 5,479	$ 29,280

Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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