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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
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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

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-1 + Details
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