CASH, CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES

6 Months Ended

Sep. 30, 2019

Investments, Debt and Equity Securities [Abstract]

CASH, CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents and those investments with original maturities greater than three months to be marketable securities. Cash and cash equivalents consisted of U.S. government and municipal obligations, commercial paper, money market instruments and cash maintained with various financial institutions at September 30, 2019 and March 31, 2019.

Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows (in thousands):



	September 30, 2019		March 31, 2019		September 30, 2018		March 31, 2018
Cash and cash equivalents	$	245,064	$	409,632	$	332,183	$	369,821
Restricted cash	1,000		188		187		910
Total cash, cash equivalents and restricted cash	$	246,064	$	409,820	$	332,370	$	370,731

The Company's restricted cash includes cash balances which are legally or contractually restricted. The Company's restricted cash is included within prepaid and other current assets and consists of amounts related to holdbacks associated with prior acquisitions.

Marketable Securities

The following is a summary of marketable securities held by NetScout at September 30, 2019, classified as short-term and long-term (in thousands):



	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	25,621	$	29	$	25,650
Commercial paper	25,289		—		25,289
Corporate bonds	4,181		9		4,190
Total short-term marketable securities	55,091		38		55,129
U.S. government and municipal obligations	7,603		27		7,630
Total long-term marketable securities	7,603		27		7,630
Total marketable securities	$	62,694	$	65	$	62,759

The following is a summary of marketable securities held by NetScout at March 31, 2019, classified as short-term and long-term (in thousands):



	Amortized Cost		Unrealized Gains		Fair Value
Type of security:
U.S. government and municipal obligations	$	27,610	$	12	$	27,622
Commercial paper	48,722		—		48,722
Total short-term marketable securities	76,332		12		76,344
Corporate bonds	1,007		5		1,012
Total long-term marketable securities	1,007		5		1,012
Total marketable securities	$	77,339	$	17	$	77,356

Contractual maturities of the Company's marketable securities held at September 30, 2019 and March 31, 2019 were as follows (in thousands):



	September 30, 2019		March 31, 2019
Available-for-sale securities:
Due in 1 year or less	$	55,129	$	76,344
Due after 1 year through 5 years	7,630		1,012
	$	62,759	$	77,356