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Fair Value of Financial Instruments (Tables) | 12 Months Ended
--- | ---
Mar. 28, 2015 | Mar. 29, 2014
Fair Value of Financial Instruments [Abstract] |  |
Schedule of Fair Value of Financial Assets |
| Quoted Prices |  |  |  |  |  |
| in Active |  | Significant |  |  |  |
| Markets for |  | Other |  | Significant |  |
| Identical |  | Observable |  | Unobservable |  |
| Assets |  | Inputs |  | Inputs |  |
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 996 |  | $ | - |  | $ | - |  | $ | 996
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities | $ | - |  | $ | 153,836 |  | $ | - |  | $ | 153,836
U.S. Treasury securities |  | 27,995 |  |  | - |  |  | - |  |  | 27,995
Commercial paper |  | - |  |  | 2,487 |  |  | - |  |  | 2,487
| $ | 27,995 |  | $ | 156,323 |  | $ | - |  | $ | 184,318
| Quoted Prices |  |  |  |  |  |
| in Active |  | Significant |  |  |  |
| Markets for |  | Other |  | Significant |  |
| Identical |  | Observable |  | Unobservable |  |
| Assets |  | Inputs |  | Inputs |  |
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash equivalents |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 20,456 |  | $ | - |  | $ | - |  | $ | 20,456
Commercial paper |  | - |  |  | 1,878 |  |  | - |  |  | 1,878
| $ | 20,456 |  | $ | 1,878 |  | $ | - |  | $ | 22,334
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities | $ | - |  | $ | 246,685 |  | $ | - |  | $ | 246,685
U.S. Treasury securities |  | 56,994 |  |  | - |  |  | - |  |  | 56,994
Agency discount notes |  | - |  |  | 2,009 |  |  | - |  |  | 2,009
Commercial paper |  | - |  |  | 41,970 |  |  | - |  |  | 41,970
Certificates of deposit |  | - |  |  | 5,002 |  |  | - |  |  | 5,002
| $ | 56,994 |  | $ | 295,666 |  | $ | - |  | $ | 352,660

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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