CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

12 Months Ended

Mar. 31, 2016

Cash and Cash Equivalents [Abstract]

Summary of Marketable Securities Classified as Short-term and Long-term

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 (Losses)		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
Corporate bonds	—		—		—
Total long-term marketable securities	13,349		12		13,361
Total marketable securities	$	141,348	$	16	$	141,364

The following is a summary of marketable securities held by NetScout at March 31, 2015, 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	$	88,651	$	3		$	88,654
Commercial paper	5,093		2			5,095
Corporate bonds	7,644		(1		)	7,643
Total short-term marketable securities	101,388		4			101,392
U.S. government and municipal obligations	56,683		8			56,691
Corporate bonds	1,880		1			1,881
Total long-term marketable securities	58,563		9			58,572
Total marketable securities	$	159,951	$	13		$	159,964

Summary of Contractual Maturities of Marketable Securities

Contractual maturities of the Company’s marketable securities held at March 31, 2016 and March 31, 2015 were as follows (in thousands):

	March 31, 2016		March 31, 2015
Available-for-sale securities:
Due in 1 year or less	$	128,003	$	101,392
Due after 1 year through 5 years	13,361		58,572
	$	141,364	$	159,964