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Marketable Securities | 6 Months Ended
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Jun. 28, 2014
Cash, Cash Equivalents, and Short-term Investments [Abstract] |
Cash, Cash Equivalents and Short-term Investments | 2 Marketable Securities The Company's marketable securities within cash equivalents and investments included in the consolidated balance sheets are detailed as follows (in thousands):
|  |  | June 28, 2014
|  |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
|  |  | Cost |  | Gain |  | Loss |  | Value
U.S. Treasury securities |  | $ | 547,265 |  | $ | 418 |  | $ | (15) |  | $ | 547,668
Foreign government securities |  |  | 49,991 |  |  | - |  |  | - |  |  | 49,991
Corporate debt securities |  |  | 872,275 |  |  | 500 |  |  | (109) |  |  | 872,666
Time deposits |  |  | 67,367 |  |  | - |  |  | - |  |  | 67,367
Equity securities |  |  | 77 |  |  | 70 |  |  | - |  |  | 147
| Total |  | $ | 1,536,975 |  | $ | 988 |  | $ | (124) |  | $ | 1,537,839
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |
| Cash equivalents |  | $ | 48,970 |  | $ | - |  | $ | - |  | $ | 48,970
| Investments |  |  | 1,488,005 |  |  | 988 |  |  | (124) |  |  | 1,488,869
| Total |  | $ | 1,536,975 |  | $ | 988 |  | $ | (124) |  | $ | 1,537,839
|  |  | December 31, 2013
|  |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
|  |  | Cost |  | Gain |  | Loss |  | Value
U.S. Treasury securities |  | $ | 556,438 |  | $ | 111 |  | $ | (10) |  | $ | 556,539
Foreign government securities |  |  | 139,670 |  |  | - |  |  | - |  |  | 139,670
Corporate debt securities |  |  | 629,477 |  |  | 190 |  |  | (233) |  |  | 629,434
Time deposits |  |  | 74,050 |  |  | - |  |  | - |  |  | 74,050
Equity securities |  |  | 77 |  |  | 70 |  |  | - |  |  | 147
| Total |  | $ | 1,399,712 |  | $ | 371 |  | $ | (243) |  | $ | 1,399,840
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |
| Cash equivalents |  | $ | 36,966 |  | $ | - |  | $ | - |  | $ | 36,966
| Investments |  |  | 1,362,746 |  |  | 371 |  |  | (243) |  |  | 1,362,874
| Total |  | $ | 1,399,712 |  | $ | 371 |  | $ | (243) |  | $ | 1,399,840
The estimated fair value of marketable debt securities by maturity date is as follows (in thousands):
|  |  | June 28, 2014 |  | December 31, 2013
Due in one year or less |  | $ | 863,584 |  | $ | 1,011,459
Due after one year through two years |  |  | 606,741 |  |  | 314,184
| Total |  | $ | 1,470,325 |  | $ | 1,325,643
In the three and six months ended June 29, 2013, the Company recorded a $1.6 million charge for an other-than-temporary impairment to an investment.

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- Definition The entire disclosure for cash, cash equivalents, investments in debt and equity instruments (including cost and equity investees and related income statement amounts), equity and cost method investments, investments in joint ventures and any other investment. + References No definition available. + Details
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