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Investments (Tables)
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12 Months Ended |
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Jun. 24, 2012
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| Investments, Debt and Equity Securities [Abstract] |
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| Summary of Marketable Investments by Type |
The following table provides a summary of marketable investments as of June 24, 2012 (in thousands): | | | | | | | | | | | | | | | | | | June 24, 2012 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | Municipal bonds | $ | 209,626 |
| | $ | 2,036 |
| | $ | (58 | ) | | $ | 211,604 |
| Corporate bonds | 144,942 |
| | 1,848 |
| | (123 | ) | | 146,667 |
| Municipal variable rate demand notes | — |
| | — |
| | — |
| | — |
| U.S. agency securities | 68,156 |
| | 450 |
| | (7 | ) | | 68,599 |
| Certificates of deposit | 130,000 |
| | — |
| | — |
| | 130,000 |
| Commercial paper | — |
| | — |
| | — |
| | — |
| Non-U.S. government securities | 8,746 |
| | 15 |
| | (3 | ) | | 8,758 |
| Total | $ | 561,470 |
| | $ | 4,349 |
| | $ | (191 | ) | | $ | 565,628 |
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The following table provides a summary of marketable investments as of June 26, 2011 (in thousands): | | | | | | | | | | | | | | | | | | June 26, 2011 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | Municipal bonds | $ | 391,465 |
| | $ | 3,943 |
| | $ | (10 | ) | | $ | 395,398 |
| Corporate bonds | 207,241 |
| | 2,312 |
| | (115 | ) | | 209,438 |
| Municipal variable rate demand notes | 295 |
| | — |
| | — |
| | 295 |
| U.S. agency securities | 67,244 |
| | 807 |
| | (2 | ) | | 68,049 |
| Certificates of deposit | 10,003 |
| | 12 |
| | — |
| | 10,015 |
| Commercial paper | 4,999 |
| | — |
| | — |
| | 4,999 |
| Non-U.S. government securities | 6,986 |
| | 19 |
| | — |
| | 7,005 |
| Total | $ | 688,233 |
| | $ | 7,093 |
| | $ | (127 | ) | | $ | 695,199 |
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| Schedule of Investment Securities, Aggregated by Investment Type and Length of Time |
The following table presents the gross unrealized losses and estimated fair value of the Company’s investment securities, aggregated by investment type and the length of time that individual investment securities have been in a continuous unrealized loss position, as of June 24, 2012 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | June 24, 2012 | | Less than 12 Months | | Greater than 12 Months | | Total | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | Municipal bonds | $ | 30,102 |
| | $ | (58 | ) | | $ | — |
| | $ | — |
| | $ | 30,102 |
| | $ | (58 | ) | Corporate bonds | 30,550 |
| | (123 | ) | | — |
| | — |
| | 30,550 |
| | (123 | ) | Municipal variable rate demand notes | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| U.S. agency securities | 3,014 |
| | (7 | ) | | — |
| | — |
| | 3,014 |
| | (7 | ) | Certificates of deposit | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Commercial paper | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Non-U.S. government securities | 1,543 |
| | (3 | ) | | — |
| | — |
| | 1,543 |
| | (3 | ) | Total | $ | 65,209 |
| | $ | (191 | ) | | $ | — |
| | $ | — |
| | $ | 65,209 |
| | $ | (191 | ) | Number of securities with an unrealized loss | | | 33 |
| | | | — |
| | | | 33 |
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The following table presents the gross unrealized losses and estimated fair value of the Company’s investment securities, aggregated by investment type and the length of time that individual investment securities have been in a continuous unrealized loss position, as of June 26, 2011 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | June 26, 2011 | | Less than 12 Months | | Greater than 12 Months | | Total | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | | Fair Value | | Unrealized Loss | Municipal bonds | $ | 14,348 |
| | $ | (10 | ) | | $ | — |
| | $ | — |
| | $ | 14,348 |
| | $ | (10 | ) | Corporate bonds | 20,484 |
| | (115 | ) | | — |
| | — |
| | 20,484 |
| | (115 | ) | Municipal variable rate demand notes | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| U.S. agency securities | 6,518 |
| | (2 | ) | | — |
| | — |
| | 6,518 |
| | (2 | ) | Certificates of deposit | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Commercial paper | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Non-U.S. government securities | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Total | $ | 41,350 |
| | $ | (127 | ) | | $ | — |
| | $ | — |
| | $ | 41,350 |
| | $ | (127 | ) | Number of securities with an unrealized loss | | | 20 |
| | | | — |
| | | | 20 |
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| Contractual Maturities of Marketable Investments |
The contractual maturities of marketable investments at June 24, 2012 were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | Within One Year | | After One, Within Five Years | | After Five, Within Ten Years | | After Ten Years | | Total | Municipal bonds | $ | 85,261 |
| | $ | 126,343 |
| | $ | — |
| | $ | — |
| | $ | 211,604 |
| Corporate bonds | 50,462 |
| | 92,221 |
| | 3,984 |
| | — |
| | 146,667 |
| Municipal variable rate demand notes | — |
| | — |
| | — |
| | — |
| | — |
| U.S. agency securities | 31,856 |
| | 36,743 |
| | — |
| | — |
| | 68,599 |
| Certificates of deposit | 130,000 |
| | — |
| | — |
| | — |
| | 130,000 |
| Commercial paper | — |
| | — |
| | — |
| | — |
| | — |
| Non-U.S. government securities | 4,559 |
| | 4,199 |
| | — |
| | — |
| | 8,758 |
| Total | $ | 302,138 |
| | $ | 259,506 |
| | $ | 3,984 |
| | $ | — |
| | $ | 565,628 |
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