Fair Value Measurement (Tables)

12 Months Ended

Mar. 30, 2014

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 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 Balance
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

The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2013:

	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	$	87,379	$	—	$	—	$	87,379
Money market funds	79,083		—		—		79,083
Asset-backed securities			9,855				9,855
Corporate bonds	—		58,716		—		58,716
International government bonds	—		3,066				3,066
Bank deposits	—		16,583		—		16,583
Municipal bonds	—		2,094		—		2,094
Total assets measured at fair value	$	166,462	$	90,314	$	—	$	256,776
Liabilities:
Fair value of contingent consideration	—		—		6,695		6,695
Total liabilities measured at fair value	$	—	$	—	$	6,695	$	6,695

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 2014:

(in thousands)	Estimated Fair Value
Balance as of March 31, 2013	$	6,695
Changes of fair value during the year	575
Payment made during the year	(5,130		)
Balance as of March 30, 2014	$	2,140