Fair Value Measurement (Tables)

12 Months Ended

Mar. 29, 2015

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis as of March 29, 2015:

	Fair Value at Reporting Date Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents and short-term investments:
U.S. government treasuries and agencies securities	$	135,945	$	—	$	—	$	135,945
Money market funds	55,578		—		—		55,578
Asset-backed securities	—		31,830		—		31,830
Corporate bonds	—		245,675		—		245,675
International government bonds	—		1,006		—		1,006
Corporate commercial paper	—		4,999		—		4,999
Bank deposits	—		16,915		—		16,915
Repurchase agreements	—		191		—		191
Municipal bonds	—		6,044		—		6,044
Total assets measured at fair value	$	191,523	$	306,660	$	—	$	498,183

The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2014:

	Fair Value at Reporting Date Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents and short-term investments:
U.S. government treasuries and agencies securities	$	112,253	$	—	$	—	$	112,253
Money market funds	53,430		—		—		53,430
Asset-backed securities	—		22,332		—		22,332
Corporate bonds	—		199,806		—		199,806
International government bonds	—		3,014		—		3,014
Corporate commercial paper	—		6,246		—		6,246
Bank deposits	—		18,538		—		18,538
Repurchase agreements	—		46		—		46
Municipal bonds	—		9,210		—		9,210
Total assets measured at fair value	$	165,683	$	259,192	$	—	$	424,875
Liabilities:
Fair value of contingent consideration	—		—		2,140		2,140
Total liabilities measured at fair value	$	—	$	—	$	2,140	$	2,140

Change in Fair Value of Liabilities Measured Using Level 3 Inputs

The following table summarizes the change in the fair value of liabilities measured using significant unobservable inputs (Level 3) for fiscal 2015 and 2014:

(in thousands)	Estimated Fair Value
Balance as of March 31, 2013	$	6,695
Changes in fair value	575
Payment	(5,130		)
Balance as of March 30, 2014	2,140
Payment	(1,600		)
Release	(540		)
Balance as of March 29, 2015	$	—