Marketable Securities (Schedule of Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Sep. 24, 2016	Mar. 26, 2016
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	$ 118,091	$ 81,213
Gross Unrealized Gains	1
Gross Unrealized Losses	(105)	(100)
Amortized Cost	118,195	81,310
Corporate Debt Securities - U.S. [Member]
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	32,001	81,213
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(31)	(100)
Amortized Cost	32,031	$ 81,310
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Estimated Fair Value	86,090
Gross Unrealized Losses	(74)
Amortized Cost	$ 86,164

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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