Fair Value Measurements (Tables)

6 Months Ended

Sep. 29, 2018

Fair Value Disclosures [Abstract]

Fair Value Hierarchy for Financial Assets Measured at Fair Value on Recurring Basis

The Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis as of September 29, 2018 and March 31, 2018 was as follows (in thousands):

September 29, 2018	Level 1		Level 2			Level 3		Total
Cash equivalents:
Money market securities	$	29,871	$	—		$	—	$	29,871
Commercial paper	—		6,495			—		6,495
Total cash equivalents	$	29,871	$	6,495		$	—	$	36,366
Short term investments - available for sale:
U.S. treasury fund	$	26,793	$	—		$	—	$	26,793
Commercial paper	—		48,904			—		48,904
Corporate bonds	—		36,307			—		36,307
Total short-term investments - available for sale	$	26,793	$	85,211		$	—	$	112,004
Forward purchase or sale contracts:
Japanese Yen	$	—	$	(31	)	$	—	$	(31	)
New Taiwan Dollar	—		(18		)	—		(18		)
Korean Won	—		(24		)	—		(24		)
Euro	—		(5		)	—		(5		)
British Pound	—		(10		)	—		(10		)
Chinese Renminbi	—		12			—		12
Singapore Dollar	—		(1		)	—		(1		)
Total forward contracts	$	—	$	(77	)	$	—	$	(77	)
Deferred compensation plan assets:*
Mutual funds and exchange traded funds	$	2,234	$	—		$	—	$	2,234
Money market securities	208		—			—		208
Total deferred compensation plan assets	$	2,442	$	—		$	—	$	2,442

March 31, 2018	Level 1		Level 2			Level 3		Total
Cash equivalents:
Money market securities	$	41,752	$	—		$	—	$	41,752
U.S. treasury fund	2,500		—			—		2,500
Commercial paper	—		3,498			—		3,498
Corporate bonds	—		1,999			—		1,999
Total cash equivalents	$	44,252	$	5,497		$	—	$	49,749
Short term investments - available for sale:
U.S. treasury fund	$	10,458	$	—		$	—	$	10,458
Commercial paper	—		25,913			—		25,913
Corporate bonds	—		10,750			—		10,750
Total short-term investments - available for sale	$	10,458	$	36,663		$	—	$	47,121
Forward purchase or sale contracts:
Japanese Yen	$	—	$	(23	)	$	—	$	(23	)
New Taiwan Dollar	—		3			—		3
Korean Won	—		(12		)	—		(12		)
Euro	—		7			—		7
British Pound	—		49			—		49
Chinese Renminbi	—		(29		)	—		(29		)
Singapore Dollar	—		(1		)	—		(1		)
Total forward contracts	$	—	$	(6	)	$	—	$	(6	)
Deferred compensation plan assets:*
Mutual funds and exchange traded funds	$	1,841	$	—		$	—	$	1,841
Money market securities	207		—			—		207
Total deferred compensation plan assets	$	2,048	$	—		$	—	$	2,048

Investments

The Company’s investments, including investments classified as cash equivalents, at September 29, 2018 and March 31, 2018 were as follows (in thousands):

			Unrealized
September 29, 2018	Cost		Gain		Loss			Fair Value
Available-for-sale securities (current):
U.S. treasury fund	$	26,800	$	—	$	(7	)	$	26,793
Commercial paper	55,399		—		—			55,399
Corporate Bonds	36,322		—		(15		)	36,307
Total investments (current)	$	118,521	$	—	$	(22	)	$	118,499
Available-for-sale securities (non-current):
Mutual funds, exchange traded funds and money market securities*	$	2,150	$	292	$	—		$	2,442
Total investments (non-current)	$	2,150	$	292	$	—		$	2,442
			Unrealized
March 31, 2018	Cost		Gain		Loss			Fair Value
Available-for-sale securities (current):
U.S. treasury fund	$	12,975	$	—	$	(17	)	$	12,958
Commercial paper	29,411		—		—			29,411
Corporate bonds	12,768		—		(19		)	12,749
Total investments (current)	$	55,154	$	—	$	(36	)	$	55,118
Available-for-sale securities (non-current):
Mutual funds, exchange traded funds and money market securities*	$	1,881	$	167	$	—		$	2,048
Total investments (non-current)	$	1,881	$	167	$	—		$	2,048