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CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS (Tables) | 3 Months Ended
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Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Marketable Securities | The following is a summary of marketable securities held by NetScout at June 30, 2025, classified as short-term and long-term (in thousands):
| Amortized Cost |  | Unrealized (Losses) Gains |  | Fair Value
Type of security: |  |  |  |  |
U.S. government and municipal obligations | $ | 5,957 |  |  | $ | (1) |  |  | $ | 5,956 |
Commercial paper | 18,525 |  |  | — |  |  | 18,525 |
Corporate bonds | 997 |  |  | (1) |  |  | 996 |
Certificates of deposit | 1,263 |  |  | — |  |  | 1,263 |
Agency bonds | 955 |  |  | — |  |  | 955 |
Total short-term marketable securities | 27,697 |  |  | (2) |  |  | 27,695 |
U.S. government and municipal obligations | 976 |  |  | 2 |  |  | 978 |
Corporate bonds | 10,019 |  |  | — |  |  | 10,019 |
Total long-term marketable securities | 10,995 |  |  | 2 |  |  | 10,997 |
Total marketable securities | $ | 38,692 |  |  | $ | — |  |  | $ | 38,692 |
The following is a summary of marketable securities held by NetScout at March 31, 2025, classified as short-term and long-term (in thousands):
| Amortized Cost |  | Unrealized Gains (Losses) |  | Fair Value
Type of security: |  |  |  |  |
U.S. government and municipal obligations | $ | 4,413 |  |  | $ | 1 |  |  | $ | 4,414 |
Commercial paper | 17,358 |  |  | — |  |  | 17,358 |
Certificates of deposit | 505 |  |  | — |  |  | 505 |
Total short-term marketable securities | 22,276 |  |  | 1 |  |  | 22,277 |
U.S. government and municipal obligations | 1,005 |  |  | (1) |  |  | 1,004 |
Total long-term marketable securities | 1,005 |  |  | (1) |  |  | 1,004 |
Total marketable securities | $ | 23,281 |  |  | $ | — |  |  | $ | 23,281 |
Schedule of Contractual Maturities of Marketable Securities | Contractual maturities of the Company's marketable securities held at June 30, 2025 and March 31, 2025 were as follows (in thousands):
| June 30, 2025 |  | March 31, 2025
Available-for-sale securities: |  |  |
Due in 1 year or less | $ | 27,695 |  |  | $ | 22,277 |
Due after 1 year through 5 years | 10,997 |  |  | 1,004 |
| $ | 38,692 |  |  | $ | 23,281 |

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