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Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended
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Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011 | Dec. 28, 2013 Unrealized Gain (Loss) on Cash Flow Hedge | Dec. 29, 2012 Unrealized Gain (Loss) on Cash Flow Hedge | Dec. 31, 2011 Unrealized Gain (Loss) on Cash Flow Hedge | Dec. 28, 2013 Net Unrealized Losses on Available-For-Sale Securities | Dec. 29, 2012 Net Unrealized Losses on Available-For-Sale Securities | Dec. 31, 2011 Net Unrealized Losses on Available-For-Sale Securities | Jan. 31, 2014 Maximum | Jan. 31, 2013 Maximum | Apr. 30, 2012 Maximum | Oct. 31, 2011 Maximum | Jul. 31, 2010 Maximum
Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock issued | 1,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued in connection with the acquisition of Energy Micro | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Program Amount authorized to repurchase |  |  |  |  |  |  |  |  |  | $ 100,000 | $ 50,000 | $ 100,000 | $ 50,000 | $ 150,000
Components of accumulated other comprehensive loss, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of the period | (946) | (2,467) | (3,648) | (428) | (1,299) | (2,477) | (518) | (1,168) | (1,171) |  |  |  |  |
Other comprehensive income (loss) before reclassifications | 49 | 29 | (273) | 397 | (621) | (276) | (348) | 650 | 3 |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss | 213 | 1,492 | 1,454 | 364 | 1,492 | 1,454 | (151) |  |  |  |  |  |  |
Other comprehensive income | 262 | 1,521 | 1,181 | 761 | 871 | 1,178 | (499) | 650 | 3 |  |  |  |  |
Balance at end of the period | (684) | (946) | (2,467) | 333 | (428) | (1,299) | (1,017) | (518) | (1,168) |  |  |  |  |
Repurchase of common stock (in shares) | 700,000 | 1,700,000 | 3,200,000 |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | $ 26,022 | $ 62,019 | $ 110,063 |  |  |  |  |  |  |  |  |  |  |

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