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CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS (Tables)
 3 Months Ended
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 paper18,525 — 18,525 
Corporate bonds997 (1)996 
Certificates of deposit1,263 — 1,263 
Agency bonds 955 — 955 
Total short-term marketable securities27,697 (2)27,695 
U.S. government and municipal obligations976 2 978 
Corporate bonds 10,019 — 10,019 
Total long-term marketable securities10,995 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 paper17,358 — 17,358 
Certificates of deposit505 — 505 
Total short-term marketable securities22,276 1 22,277 
U.S. government and municipal obligations1,005 (1)1,004 
Total long-term marketable securities1,005 (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 years10,997 1,004 
$38,692 $23,281