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Investments (Tables) | 3 Months Ended
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Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
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 June 30, 2023
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |
Corporate notes and bonds | $ | 4,070 |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 4,070 |
Money market funds | 247,279 |  |  | — |  |  | — |  |  |  |  | 247,279 |
Total cash equivalents | 251,349 |  |  | — |  |  | — |  |  |  |  | 251,349 |
Marketable securities: |  |  |  |  |  |  |  |  |
Asset-backed securities | 12,954 |  |  | 1 |  |  | (34) |  |  |  |  | 12,921 |
Certificates of deposit | 27,379 |  |  | 1 |  |  | (58) |  |  |  |  | 27,322 |
Commercial paper | 59,054 |  |  | 3 |  |  | (82) |  |  |  |  | 58,975 |
Corporate notes and bonds | 87,064 |  |  | 92 |  |  | (345) |  |  |  |  | 86,811 |
Sovereign bonds | 7,745 |  |  | — |  |  | (358) |  |  |  |  | 7,387 |
U.S. government and agency securities | 388,767 |  |  | — |  |  | (15,739) |  |  |  |  | 373,028 |
Total marketable securities | 582,963 |  |  | 97 |  |  | (16,616) |  |  |  |  | 566,444 |
Total cash equivalents and marketable securities | $ | 834,312 |  |  | $ | 97 |  |  | $ | (16,616) |  |  |  |  | $ | 817,793 |
The cost, gross unrealized gains and losses, and fair value of investments were as follows (in thousands):
| As of March 31, 2023
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |
Money market funds | $ | 126,275 |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 126,275 |
Total cash equivalents | 126,275 |  |  | — |  |  | — |  |  |  |  | 126,275 |
Marketable securities: |  |  |  |  |  |  |  |  |
Asset-backed securities | 7,271 |  |  | — |  |  | (71) |  |  |  |  | 7,200 |
Certificates of deposit | 27,380 |  |  | — |  |  | (80) |  |  |  |  | 27,300 |
Commercial paper | 78,609 |  |  | 6 |  |  | (126) |  |  |  |  | 78,489 |
Corporate notes and bonds | 119,241 |  |  | 49 |  |  | (778) |  |  |  |  | 118,512 |
Sovereign bonds | 7,744 |  |  | — |  |  | (360) |  |  |  |  | 7,384 |
U.S. government and agency securities | 461,584 |  |  | 12 |  |  | (17,509) |  |  |  |  | 444,087 |
Total marketable securities | 701,829 |  |  | 67 |  |  | (18,924) |  |  |  |  | 682,972 |
Total cash equivalents and marketable securities | $ | 828,104 |  |  | $ | 67 |  |  | $ | (18,924) |  |  |  |  | $ | 809,247 |
Contractual Maturities of Available-For-Sale Debt Securities | As of June 30, 2023, the contractual maturities of the Company’s available-for-sale debt securities were as follows (in thousands):
| Fair Value
Due within one year | $ | 420,066 |
Due in one year to two years | 137,527 |
Asset-backed securities | 12,921 |
Total | $ | 570,514 |

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