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Note 5. Short-Term Investments (Tables) | 9 Months Ended
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Sep. 29, 2013
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|  | Amortized Cost |  |  | Fair Value |  |  | Unrealized Gain/(Loss) |
Commercial paper |  | $ | 19,984 |  |  | $ | 19,987 |  |  | $ | 3 |
Corporate bonds |  |  | 28,976 |  |  |  | 28,964 |  |  |  | (12) |
Balances at September 29, 2013 |  | $ | 48,960 |  |  | $ | 48,951 |  |  | $ | (9) |

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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