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Marketable Securities | 12 Months Ended
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Mar. 30, 2013
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 consolidated balance sheet as marketable securities, as appropriate. The following table is a summary of available-for-sale securities (in thousands):
|  |  |  |  |  |  |  |  |  |  | Estimated
|  |  |  |  | Gross |  |  | Gross |  |  | Fair Value
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | (Net Carrying
As of March 30, 2013 |  | Cost |  |  | Gains |  |  | Losses |  |  | Amount)
Corporate debt securities | $ | 94,798 |  | $ | 2 |  | $ | (133) |  | $ | 94,667
U.S. Treasury securities |  | 34,380 |  |  | 4 |  |  | (3) |  |  | 34,381
Agency discount notes |  | 1,027 |  |  | - |  |  | - |  |  | 1,027
Commercial paper |  | 40,089 |  |  | 9 |  |  | (28) |  |  | 40,070
Total securities | $ | 170,294 |  | $ | 15 |  | $ | (164) |  | $ | 170,145
The Company’s specifically identified gross unrealized losses of $164 thousand relates to 43 different securities with a total amortized cost of approximately $124.1 million at March 30, 2013. Because the Company does not intend to sell the investments at a loss and 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 30, 2013. Further, the securities with gross unrealized losses had been in a continuous unrealized loss position for less than 12 months as of March 30, 2013.
|  |  |  |  |  |  | Estimated
|  |  | Gross |  | Gross |  | Fair Value
| Amortized |  | Unrealized |  | Unrealized |  | (Net Carrying
As of March 31, 2012 | Cost |  | Gains |  | Losses |  | Amount)
Corporate debt securities | $ | 48,011 |  | $ | 33 |  | $ | (19) |  | $ | 48,025
U.S. Treasury securities |  | 30,264 |  |  | 1 |  |  | (4) |  |  | 30,261
Agency discount notes |  | 16,789 |  |  | 8 |  |  | (1) |  |  | 16,796
Commercial paper |  | 23,719 |  |  | 5 |  |  | (15) |  |  | 23,709
Total securities | $ | 118,783 |  | $ | 47 |  | $ | (39) |  | $ | 118,791
The Company’s specifically identified gross unrealized losses of $39 thousand relates to 37 different securities with a total amortized cost of approximately $72.6 million at March 31, 2012. Because the Company does not intend to sell the investments at a loss and 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 31, 2012. Further, the securities with gross unrealized losses had been in a continuous unrealized loss position for less than 12 months as of March 31, 2012. The cost and estimated fair value of available-for-sale investments by contractual maturity were as follows:
|  |  | March 30, 2013 |  |  | March 31, 2012
|  |  | Amortized |  |  | Estimated |  |  | Amortized |  |  | Estimated
|  |  | Cost |  |  | Fair Value |  |  | Cost |  |  | Fair Value
Within 1 year |  | $ | 105,290 |  | $ | 105,235 |  | $ | 115,871 |  | $ | 115,876
After 1 year |  |  | 65,004 |  |  | 64,910 |  |  | 2,912 |  |  | 2,915
Total |  | $ | 170,294 |  | $ | 170,145 |  | $ | 118,783 |  | $ | 118,791

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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 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 3, 19, 20, 21, 22, 137 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: 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 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 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 7: 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=6872113&loc=d3e27232-111563 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=6872113&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 2 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 10: 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=6872113&loc=d3e27290-111563 + Details
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