CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

9 Months Ended

Dec. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Components Of Marketable Securities

The following is a summary of marketable securities held by NetScout at December 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	$	39,433	$	5	$	39,438
Commercial paper	7,093		0		7,093
Corporate bonds	7,749		4		7,753
Certificates of deposit	2,059		0		2,059
Total short-term marketable securities	56,334		9		56,343
U.S. government and municipal obligations	35,147		18		35,165
Corporate bonds	2,057		0		2,057
Total long-term marketable securities	37,204		18		37,222
Total marketable securities	$	93,538	$	27	$	93,565

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		0		12,390
Corporate bonds	2,559		2		2,561
Certificates of deposit	4,960		0		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		0		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 December 31, 2013 and March 31, 2013 were as follows (in thousands):

	December 31, 2013		March 31, 2013
Available-for-sale securities:
Due in 1 year or less	$	56,343	$	37,338
Due after 1 year through 5 years	37,222		16,823
	$	93,565	$	54,161