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Stockholders' Equity (Details Textual) (USD $) | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011 | Dec. 28, 2013 Employee Stock Purchase Plan [Member] | Dec. 29, 2012 Employee Stock Purchase Plan [Member] | Dec. 31, 2011 Employee Stock Purchase Plan [Member] | Jun. 30, 2012 November 29, 2010 Program [Member] | Nov. 29, 2010 November 29, 2010 Program [Member] | Dec. 29, 2012 November 29, 2010 Program [Member] | Dec. 31, 2011 November 29, 2010 Program [Member] | Jan. 01, 2011 November 29, 2010 Program [Member] | Feb. 22, 2013 May 29, 2012 Program [Member] | May 29, 2012 May 29, 2012 Program [Member] | Dec. 28, 2013 May 29, 2012 Program [Member] | Dec. 29, 2012 May 29, 2012 Program [Member]
Preferred and Common Stock and Stock Repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock | 47,000,000 | 47,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value per share (in dollars per share) | $ 0.001 | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of preferred stock | 3,000,000 | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value per share (in dollars per share) | $ 0.001 | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount of common stock approved to repurchase, Value |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  | $ 5,000,000 | $ 20,000,000 |  |
Common stock repurchased and retired during period, value | 5,000,000 | 8,504,000 | 4,257,000 |  |  |  |  |  | 4,900,000 | 4,300,000 | 800,000 |  |  |  |
Common stock repurchased and retired, shares | 332,771 | 587,766 |  |  |  |  | 667,406 |  |  |  |  |  |  |  | 250,400
Weighted average repurchase price of common stock (in dollars per share) | $ 15.03 | $ 14.47 |  |  |  |  | $ 14.97 |  |  |  |  |  |  |  | $ 14.15
Remaining authorized repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,500,000 |
Employee Stock Purchase Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum percentage of salary withholdings |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |
Purchase price of common stock, percent |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |
Shares remaining for issuance |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |
Shares issued |  |  |  | 128.165 | 65,355 | 112,491 |  |  |  |  |  |  |  |  |
Weighted average price of shares issued (in dollars per share) |  |  |  | $ 12.38 | $ 15.36 | $ 12.92 |  |  |  |  |  |  |  |  |

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