CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

12 Months Ended

Mar. 31, 2014

Cash and Cash Equivalents [Abstract]

Components of Marketable Securities

The following is a summary of marketable securities held by NetScout at March 31, 2014 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	$	53,854	$	26		$	53,880
Commercial paper	14,581		—			14,581
Corporate bonds	6,772		1			6,773
Total short-term marketable securities	75,207		27			75,234
U.S. government and municipal obligations	37,875		2			37,877
Corporate bonds	3,611		(4		)	3,607
Total long-term marketable securities	41,486		(2		)	41,484
Total marketable securities	$	116,693	$	25		$	116,718

The following is a summary of marketable securities held by NetScout at March 31, 2013, classified as short-term and long-term (in thousands):

	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	17,416	$	11	$	17,427
Commercial paper	12,390		—		12,390
Corporate bonds	2,559		2		2,561
Certificates of deposit	4,960		—		4,960
Total short-term marketable securities	37,325		13		37,338
U.S. government and municipal obligations	14,211		7		14,218
Corporate bonds	2,605		—		2,605
Total long-term marketable securities	16,816		7		16,823
Total marketable securities	$	54,141	$	20	$	54,161

Contractual Maturities of Marketable Securities

Contractual maturities of the Company’s marketable securities held at March 31, 2014 and March 31, 2013 were as follows (in thousands):

	March 31, 2014		March 31, 2013
Available-for-sale securities:
Due in 1 year or less	$	75,234	$	37,338
Due after 1 year through 5 years	41,484		16,823
	$	116,718	$	54,161