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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES
 6 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIESThe Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents and those investments with original maturities greater than three months to be marketable securities. Cash and cash equivalents mainly consisted of U.S. government and municipal obligations, commercial paper, certificate of deposits, money market instruments and cash maintained with various financial institutions at September 30, 2022 and March 31, 2022.
Marketable Securities
The following is a summary of marketable securities held by NetScout at September 30, 2022, classified as short-term and long-term (in thousands):
Amortized
Cost		Unrealized
Losses		Fair
Value
Type of security:
U.S. government and municipal obligations$17,776 $(38)$17,738 
Commercial paper22,292 — 22,292 
Corporate bonds819 (4)815 
Certificates of deposit5,961 — 5,961 
Total short-term marketable securities46,848 (42)46,806 
Total long-term marketable securities— — — 
Total marketable securities$46,848 $(42)$46,806 
The following is a summary of marketable securities held by NetScout at March 31, 2022, classified as short-term and long-term (in thousands):
Amortized
Cost		Unrealized
Losses		Fair
Value
Type of security:
U.S. government and municipal obligations$40,895 $(32)$40,863 
Commercial paper23,353 — 23,353 
Corporate bonds823 (2)821 
Certificates of deposit2,000 — 2,000 
Total short-term marketable securities67,071 (34)67,037 
Total long-term marketable securities— — — 
Total marketable securities$67,071 $(34)$67,037 
Contractual maturities of the Company's marketable securities held at September 30, 2022 and March 31, 2022 were as follows (in thousands):
September 30,
2022		March 31,
2022
Available-for-sale securities:
Due in 1 year or less$46,806 $67,037 
Due after 1 year through 5 years— — 
$46,806 $67,037