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Short-Term Investments | 9 Months Ended
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Sep. 27, 2013
Cash and Cash Equivalents [Abstract] |
Short-Term Investments | SHORT-TERM INVESTMENTS The following table summarizes the Company’s short-term investments (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
As of September 27, 2013 |  |  |  |  |  |  |
State, municipal and local government agencies bonds | $ | 36,195 |  |  | $ | 41 |  |  | $ | (3 | ) |  | $ | 36,233 |
Corporate bonds | 32,376 |  |  | 16 |  |  | (11 | ) |  | 32,381 |
Commercial paper | 3,348 |  |  | — |  |  | — |  |  | 3,348 |
U.S. federal government bonds | 4,001 |  |  | 3 |  |  | — |  |  | 4,004 |
Total short-term investments | $ | 75,920 |  |  | $ | 60 |  |  | $ | (14 | ) |  | $ | 75,966 |
As of December 31, 2012 |  |  |  |  |  |  |
Certificates of deposit | $ | 1,603 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,603 |
State, municipal and local government agencies bonds | 59,009 |  |  | 45 |  |  | (4 | ) |  | 59,050 |
Corporate bonds | 31,568 |  |  | 4 |  |  | (10 | ) |  | 31,562 |
Commercial paper | 10,287 |  |  | 1 |  |  | — |  |  | 10,288 |
U.S. federal government bonds | 2,003 |  |  | — |  |  | — |  |  | 2,003 |
Total short-term investments | $ | 104,470 |  |  | $ | 50 |  |  | $ | (14 | ) |  | $ | 104,506 |
The following table summarizes the maturities of the Company’s short-term investments (in thousands):
| September 27, 2013 |  | December 31, 2012
Less than one year | $ | 50,782 |  |  | $ | 76,779 |
Due in 1 - 2 years | 25,184 |  |  | 27,727 |
Total short-term investments | $ | 75,966 |  |  | $ | 104,506 |
Realized gains and losses from the sale of investments for the three and nine months ended September 27, 2013 and September 28, 2012 were not material. Impairment of Investments The Company monitors its investment portfolio for impairment on a periodic basis. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. A decline of fair value below amortized costs of debt securities is considered other-than-temporary if the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis. At the present time, the Company does not intend to sell its investments that have unrealized losses in accumulated other comprehensive loss. In addition, the Company does not believe that it is more likely than not that it will be required to sell its investments that have unrealized losses in accumulated other comprehensive loss before the Company recovers the principal amounts invested. The Company believes that the unrealized losses are temporary and do not require an other-than-temporary impairment, based on its evaluation of available evidence as of September 27, 2013. As of September 27, 2013, there were no individual available-for-sale securities in a material unrealized loss position and the amount of unrealized losses on the total investment balance was insignificant.

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- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. + References No definition available. + Details
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