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Marketable Securities | 12 Months Ended
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Mar. 26, 2016
Marketable Securities [Abstract] |
Marketable Securities | 3. Marketable Securities ﻿ The Company’s investments that have original maturities greater than 90 days have been classified as available-for-sale securities in accordance with U.S. GAAP. Marketable securities are categorized on the C onsolidated B alance S heet as “M arketable securities” within the short-term or long-term classification, as appropriate. ﻿ The following table is a summary of available-for-sale securities (in thousands):
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﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  | Estimated
﻿ |  |  |  | Gross |  | Gross |  | Fair Value
﻿ | Amortized |  | Unrealized |  | Unrealized |  | (Net Carrying
﻿As of March 26, 2016 | Cost |  | Gains |  | Losses |  | Amount)
﻿Corporate debt securities | $ | 81,310 |  | $ | 3 |  | $ | (100) |  | $ | 81,213
﻿ The Company’s specifically identified gross unrealized losses of $100 thousand relates to 21 different securities with a total amortized cost of approximately $64.7 million at March 26, 2016. Two securities had been in a continuous unrealized loss position for more than 12 months as of March 26, 2016. The gross unrealized loss on both of these securities was less than one half of one percent of the position value, and both securities mature during the first half of fiscal year 2017. Because the Company does not intend to sell the investments at a loss and it is not more likely than not that the Company will be required to sell the investments before recovery of its amortized cost basis, it did not consider the investment in these securities to be other-than-temporarily impaired at March 26, 2016. ﻿
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﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  | Estimated
﻿ |  |  | Gross |  | Gross |  | Fair Value
﻿ | Amortized |  | Unrealized |  | Unrealized |  | (Net Carrying
﻿As of March 28, 2015 | Cost |  | Gains |  | Losses |  | Amount)
﻿Corporate debt securities | $ | 153,896 |  | $ | 8 |  | $ | (68) |  | $ | 153,836
﻿U.S. Treasury securities |  | 28,010 |  |  | - |  |  | (15) |  |  | 27,995
﻿Commercial paper |  | 2,485 |  |  | 2 |  |  | - |  |  | 2,487
﻿Total securities | $ | 184,391 |  | $ | 10 |  | $ | (83) |  | $ | 184,318
﻿ The Company’s specifically identified gross unrealized losses of $8 3 thousand relates to 34 different securities with a total amortized cost of approximately $154.3 millio n at March 28, 201 5. Because the Company does not intend to sell the investments at a loss and it is not more likely than not that the Company will not be required to sell the investments before recovery of its amortized cost basis, it did not consider the investment in these securities to be other-than-temporarily impaired at March 28, 201 5. Further, the securities with gross unrealized losses had been in a continuous unrealized loss position for less than 12 months as of March 28, 201 5. ﻿ The cost and estimated fair value of available-for-sale investments by contractual maturity were as follows: ﻿
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﻿ |  | March 26, 2016 |  | March 28, 2015
﻿ |  | Amortized |  | Estimated |  | Amortized |  | Estimated
﻿ |  | Cost |  | Fair Value |  | Cost |  | Fair Value
﻿Within 1 year |  | $ | 60,603 |  | $ | 60,582 |  | $ | 124,275 |  | $ | 124,246
﻿After 1 year |  |  | 20,707 |  |  | 20,631 |  |  | 60,116 |  |  | 60,072
﻿Total |  | $ | 81,310 |  | $ | 81,213 |  | $ | 184,391 |  | $ | 184,318
﻿

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 + Details
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