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Investments (Tables) | 6 Months Ended
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Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Cost, Gross Unrealized Gains and Losses, and Fair Value of Investments | The cost, gross unrealized gains and losses, and fair value of investments are as follows (in thousands):
| As of September 30, 2025
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |
Commercial paper | $ | 34,977 |  |  | $ | — |  |  | $ | (4) |  |  |  |  | $ | 34,973 |
Money market funds | 92,194 |  |  | — |  |  | — |  |  |  |  | 92,194 |
Total cash equivalents | 127,171 |  |  | — |  |  | (4) |  |  |  |  | 127,167 |
Marketable securities: |  |  |  |  |  |  |  |  |
Commercial paper | 30,587 |  |  | 4 |  |  | (1) |  |  |  |  | 30,590 |
Corporate notes and bonds | 515,522 |  |  | 1,442 |  |  | (46) |  |  |  |  | 516,918 |
U.S. government and agency securities | 161,032 |  |  | 583 |  |  | (5) |  |  |  |  | 161,610 |
Total marketable securities | 707,141 |  |  | 2,029 |  |  | (52) |  |  |  |  | 709,118 |
Total cash equivalents and marketable securities | $ | 834,312 |  |  | $ | 2,029 |  |  | $ | (56) |  |  |  |  | $ | 836,285 |
The cost, gross unrealized gains and losses, and fair value of investments were as follows (in thousands):
| As of March 31, 2025
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |
Commercial paper | $ | 73,055 |  |  | $ | — |  |  | $ | (8) |  |  |  |  | $ | 73,047 |
Money market funds | 84,475 |  |  | — |  |  | — |  |  |  |  | 84,475 |
Total cash equivalents | 157,530 |  |  | — |  |  | (8) |  |  |  |  | 157,522 |
Marketable securities: |  |  |  |  |  |  |  |  |
Commercial paper | 42,860 |  |  | 7 |  |  | (4) |  |  |  |  | 42,863 |
Corporate notes and bonds | 501,202 |  |  | 1,373 |  |  | (131) |  |  |  |  | 502,444 |
U.S. government and agency securities | 160,212 |  |  | 532 |  |  | (1) |  |  |  |  | 160,743 |
Total marketable securities | 704,274 |  |  | 1,912 |  |  | (136) |  |  |  |  | 706,050 |
Total cash equivalents and marketable securities | $ | 861,804 |  |  | $ | 1,912 |  |  | $ | (144) |  |  |  |  | $ | 863,572 |
Schedule of Contractual Maturities of Available-For-Sale Debt Securities | As of September 30, 2025, the contractual maturities of the Company’s available-for-sale debt securities were as follows (in thousands):
| Fair Value
Due within one year | $ | 491,548 |
Due in one to two years | 252,543 |
Total | $ | 744,091 |

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