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Short-term Investments and Fair Value Measurements | 3 Months Ended
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May 31, 2025
Short-Term Investments [Abstract] |
Short-term Investments and Fair Value Measurements | 3. Short-term Investments and Fair Value Measurements Short-term investments are securities with original maturities of greater than three months but less than twelve months and were comprised of U.S. Treasury Bills. The Company determines the classification of these securities as trading, available for sale or held to maturity at the time of purchase and re-evaluates these determinations at each balance sheet date. The Company's short-term investments were classified as held-to-maturity for the period presented as it had the positive intent and ability to hold these investments to maturity. The Company's held-to-maturity investments were stated at amortized cost with a zero credit loss allowance because the probability of default is virtually zero due to the high credit rating, long history of no credit losses and the widely recognized risk free nature of these investments. Amortized cost and estimated fair value of investment securities classified as held-to-maturity were as follows at May 31, 2025 and February 28, 2025 (in thousands):
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Cost or |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
|  | Amortized |  |  | Holding |  |  | Holding |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
May 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Investment securities due in less than one year |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
February 28, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Investment securities due in less than one year |  | $ | 5,475 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 5,479 |
The Company’s short-term investments in investment securities were Level 1 fair value measure. The Company did not hold any Level 2 or 3 financial assets or liabilities measured at fair value on a recurring basis. There were no transfers between levels during the three months ended May 31, 2025.

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