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Investments and Fair Value Measurement (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Mar. 31, 2023
Investments, All Other Investments [Abstract] |  |
Summary of Investments in Debt Securities that are Measured at Fair Value | The following table summarizes the Company's investments in debt securities that are measured at fair value as of December 31, 2023 (in thousands):
|  | Amortized costs basis |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
As of March 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Investment in debt securities |  | $ | 4,943 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 4,945 |
As of December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Investment in debt securities |  | $ | 1,995 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,995 |
| The following table summarizes the Company's investments in debt securities that are measured at fair value as of March 31, 2023 (in thousands):
|  | Amortized costs basis |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
As of March 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Investment in debt securities |  | $ | 4,943 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 4,945 |
Schedule of Activity for Investments in Equity Securities Measured at Fair Value | The following table presents the activity for investments in equity securities measured at fair value for the nine months ended December 31, 2023 (in thousands):
|  | Investment in Equity Securities (in thousands) |
Balance at March 31, 2023 |  | $ | 706 |
Liquidation of equity securities |  |  | (718 | )
Gain on investment in equity securities |  |  | 12 |
Balance at December 31, 2023 |  | $ | — |
| The following table presents the activity for investments in equity securities measured at fair value for the year ended March 31, 2023 (in thousands):
|  | Investment in Equity Securities (in thousands) |
Balance at March 31, 2022 |  | $ | — |
Purchases at cost |  |  | 1,061 |
Sales |  |  | (384 | )
Gain on investment in equity securities |  |  | 29 |
Balance at March 31, 2023 |  | $ | 706 |

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