CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

9 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities

The following is a summary of marketable securities held by NetScout at December 31, 2016, classified as short-term and long-term (in thousands):

	Amortized Cost		Unrealized Losses			Fair Value
Type of security:
U.S. government and municipal obligations	$	89,067	$	(33	)	$	89,034
Commercial paper	21,153		—			21,153
Corporate bonds	4,685		(2		)	4,683
Total short-term marketable securities	114,905		(35		)	114,870
U.S. government and municipal obligations	17,243		(37		)	17,206
Total long-term marketable securities	17,243		(37		)	17,206
Total marketable securities	$	132,148	$	(72	)	$	132,076

The following is a summary of marketable securities held by NetScout at March 31, 2016, classified as short-term and long-term (in thousands):

	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	109,963	$	4	$	109,967
Commercial paper	16,172		—		16,172
Corporate bonds	1,864		—		1,864
Total short-term marketable securities	127,999		4		128,003
U.S. government and municipal obligations	13,349		12		13,361
Total long-term marketable securities	13,349		12		13,361
Total marketable securities	$	141,348	$	16	$	141,364

Summary of Contractual Maturities of Marketable Securities

Contractual maturities of the Company’s marketable securities held at December 31, 2016 and March 31, 2016 were as follows (in thousands):

	December 31, 2016		March 31, 2016
Available-for-sale securities:
Due in 1 year or less	$	114,870	$	128,003
Due after 1 year through 5 years	17,206		13,361
	$	132,076	$	141,364