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Investments | 6 Months Ended
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Jun. 28, 2014
Investments |
(8) | Investments
Investments include primarily investment-grade corporate bonds and U.S. Treasury obligations having maturities of up to five years (the “bond portfolio”). Investments in the bond portfolio are reported as available-for-sale and are carried at fair value. Investments maturing less than one year from the balance sheet date are included in short-term investments and investments maturing more than one year from the balance sheet date are included in other assets in the consolidated balance sheets. Management performs an analysis of the nature of the unrealized losses on available-for-sale investments to determine whether such losses are other-than-temporary. Unrealized losses, representing the excess of the purchase price of an investment over its fair value as of the end of a period, considered to be other-than-temporary, are to be included as a charge in the statement of income, while unrealized losses considered to be temporary are to be included as a component of shareholders’ equity. Investments whose values are based on quoted market prices in active markets are classified within Level 1. Investments that trade in markets that are not considered to be active, but are valued based on quoted market prices, are classified within Level 2. As Level 2 investments include positions that are not traded in active markets, valuations may be adjusted to reflect illiquidity and/or non-transferability, which are generally based on available market information. Any transfers between levels are recognized as of the beginning of any reporting period. Fair value of the bond portfolio was determined using Level 1 inputs related to U.S. Treasury obligations and money market investments and Level 2 inputs related to investment-grade corporate bonds, asset-backed securities and direct obligations of government agencies. Unrealized gains, net of unrealized losses, on the investments in the bond portfolio were $732,000 and $378,000 at June 28, 2014 and December 28, 2013, respectively. The amortized cost and fair values of available-for-sale investments are as follows at June 28, 2014 and December 28, 2013 (in thousands):
|  |  |  |  | Gross |  |  | Gross |  |  |  |
| Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
June 28, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 5,278 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,278 |
Asset-backed securities |  |  | 4,892 |  |  |  | 8 |  |  |  | 23 |  |  |  | 4,877 |
Corporate bonds and direct obligations of government agencies |  |  | 73,118 |  |  |  | 853 |  |  |  | 128 |  |  |  | 73,843 |
U.S. Treasury obligations |  |  | 19,512 |  |  |  | 29 |  |  |  | 7 |  |  |  | 19,534 |
Total |  | $ | 102,800 |  |  | $ | 890 |  |  | $ | 158 |  |  | $ | 103,532 |
December 28, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 2,499 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,499 |
Asset-backed securities |  |  | 4,350 |  |  |  | 19 |  |  |  | 72 |  |  |  | 4,297 |
Corporate bonds and direct obligations of government agencies |  |  | 76,786 |  |  |  | 783 |  |  |  | 370 |  |  |  | 77,199 |
U.S. Treasury obligations |  |  | 18,524 |  |  |  | 31 |  |  |  | 13 |  |  |  | 18,542 |
Total |  | $ | 102,159 |  |  | $ | 833 |  |  | $ | 455 |  |  | $ | 102,537 |
For those available-for-sale investments with unrealized losses at June 28, 2014 and December 28, 2013, the following table summarizes the duration of the unrealized loss (in thousands):
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
June 28, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | 1,010 |  |  | $ | 2 |  |  | $ | 2,469 |  |  | $ | 21 |  |  | $ | 3,479 |  |  | $ | 23 |
Corporate bonds and direct obligations of government agencies |  |  | 5,562 |  |  |  | 7 |  |  |  | 11,451 |  |  |  | 121 |  |  |  | 17,013 |  |  |  | 128 |
U.S. Treasury obligations |  |  | 3,000 |  |  |  | — |  |  |  | 762 |  |  |  | 7 |  |  |  | 3,762 |  |  |  | 7 |
Total |  | $ | 9,572 |  |  | $ | 9 |  |  | $ | 14,682 |  |  | $ | 149 |  |  | $ | 24,254 |  |  | $ | 158 |
December 28, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | 3,429 |  |  | $ | 72 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,429 |  |  | $ | 72 |
Corporate bonds and direct obligations of government agencies |  |  | 22,169 |  |  |  | 370 |  |  |  | — |  |  |  | — |  |  |  | 22,169 |  |  |  | 370 |
U.S. Treasury obligations |  |  | 757 |  |  |  | 13 |  |  |  | — |  |  |  | — |  |  |  | 757 |  |  |  | 13 |
Total |  | $ | 26,355 |  |  | $ | 455 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,355 |  |  | $ | 455 |
The Company believes that unrealized losses on investments were primarily caused by rising interest rates rather than changes in credit quality. The Company expects to recover the amortized cost basis of these securities as it does not intend to sell, and does not anticipate being required to sell, these securities before recovery of the cost basis. For these reasons, the Company does not consider the unrealized losses on these securities to be other-than-temporary at June 28, 2014.

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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 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: 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 3: 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 4: 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 5: 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 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 10 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 Reference 9: 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 + Details
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