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Marketable Securities (Schedule of Available-for-sale Securities) (Details) - USD ($) $ in Thousands | Mar. 26, 2016 | Mar. 28, 2015
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value (Net Carrying Amount) | $ 81,213 | $ 184,318
Gross Unrealized Losses | (100) | (83)
Gross Unrealized Gains |  | 10
Amortized Cost | 81,310 | 184,391
Corporate Debt Securities - U.S. [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value (Net Carrying Amount) | 81,213 | 153,836
Gross Unrealized Losses | (100) | (68)
Gross Unrealized Gains | 3 | 8
Amortized Cost | $ 81,310 | 153,896
U.S. Treasury Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value (Net Carrying Amount) |  | 27,995
Gross Unrealized Losses |  | (15)
Amortized Cost |  | 28,010
Commercial Paper [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Estimated Fair Value (Net Carrying Amount) |  | 2,487
Gross Unrealized Gains |  | 2
Amortized Cost |  | $ 2,485

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + 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 (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + 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 (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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