CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

9 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities

The following is a summary of marketable securities held by NetScout at December 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	$	74,483	$	15		$	74,498
Commercial paper	7,586		4			7,590
Corporate bonds	5,882		(3		)	5,879
Total short-term marketable securities	87,951		16			87,967
U.S. government and municipal obligations	45,248		(45		)	45,203
Corporate bonds	852		0			852
Total long-term marketable securities	46,100		(45		)	46,055
Total marketable securities	$	134,051	$	(29	)	$	134,022

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

Contractual Maturities of Marketable Securities

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

	December 31, 2014		March 31, 2014
Available-for-sale securities:
Due in 1 year or less	$	87,967	$	75,234
Due after 1 year through 5 years	46,055		41,484
	$	134,022	$	116,718