CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

12 Months Ended

Mar. 31, 2019

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

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):

	March 31, 2019		March 31, 2018		March 31, 2017		March 31, 2016
Cash and cash equivalents	$	409,632	$	369,821	$	304,880	$	210,711
Restricted cash	188		910		846		186
Total cash, cash equivalents and restricted cash	$	409,820	$	370,731	$	305,726	$	210,897

Schedule of 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):

	March 31, 2019		March 31, 2018		March 31, 2017		March 31, 2016
Cash and cash equivalents	$	409,632	$	369,821	$	304,880	$	210,711
Restricted cash	188		910		846		186
Total cash, cash equivalents and restricted cash	$	409,820	$	370,731	$	305,726	$	210,897

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, 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

The following is a summary of marketable securities held by NetScout at March 31, 2018, classified as short-term and long-term (in thousands):

	Amortized Cost		Unrealized Losses			Fair Value
Type of security:
U.S. government and municipal obligations	$	42,246	$	(60	)	$	42,186
Commercial paper	33,003		—			33,003
Corporate bonds	2,754		(2		)	2,752
Total short-term marketable securities	78,003		(62		)	77,941
Total long-term marketable securities	—		—			—
Total marketable securities	$	78,003	$	(62	)	$	77,941

Summary of Contractual Maturities of Marketable Securities

Contractual maturities of the Company’s marketable securities held at March 31, 2019 and March 31, 2018 were as follows (in thousands):

	March 31, 2019		March 31, 2018
Available-for-sale securities:
Due in 1 year or less	$	76,344	$	77,941
Due after 1 year through 5 years	1,012		—
	$	77,356	$	77,941