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Stockholders' Equity and Stock-Based Compensation (Tables) | 12 Months Ended
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Jan. 03, 2015
Stockholders' Equity and Stock-Based Compensation [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of all stock option activity as of January 3, 2015 and changes during the year ended is presented below.
| Number of shares |  | Weighted-avg. exercise price per share |  | Weighted-avg. remaining contractual life
Options outstanding at December 28, 2013 | 906,251 |  |  | $ | 9.97 |  |  |
Granted | 163,078 |  |  | 19.94 |  |  |
Exercised | (343,550 | ) |  | 6.18 |  |  |
Forfeited | (29,603 | ) |  | 16.89 |  |  |
Expired | — |  |  | — |  |  |
Options outstanding at January 3, 2015 | 696,176 |  |  | $ | 13.88 |  |  | 6.2 years
Options exercisable at January 3, 2015 | 528,009 |  |  | $ | 12.50 |  |  | 5.5 years
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The fair value of each stock option grant under the Company's stock option plan was estimated on the date of grant using the Black Scholes option-pricing model with the following weighted average assumptions and results for fiscal 2014, 2013 and 2012.
Weighted Average |  | 2014 | 2013 | 2012
Expected dividend yield |  | 0.0% | 0.0% | 0.0%
Risk-free interest rate |  | 1.77% | 1.01% | 1.14%
Expected term |  | 5.75 years | 5.75 years | 5.75 years
Expected volatility |  | 43.7% | 59.8% | 62.0%
Fair value of options granted |  | $8.93 | $9.04 | $9.16
Schedule of Nonvested Share Activity [Table Text Block] | A summary of the Company’s non-vested stock, restricted stock unit and performance share unit awards as of January 3, 2015, and changes during the year ended is as follows:
| Non-Vested Shares |  | Weighted Average Grant Date Fair Value
Stock awards outstanding December 28, 2013 | 821,207 |  |  | $ | 14.93 |
Shares granted | 1,436,658 |  |  | 20.73 |
Shares vested | (861,772 | ) |  | 16.43 |
Shares forfeited | (138,920 | ) |  | 19.90 |
Stock awards outstanding January 3, 2015 | 1,257,173 |  |  | $ | 19.98 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] | A summary of the Company’s non-employee director restricted stock awards as of January 3, 2015, and changes during the year ended is as follows:
| Restricted Shares |  | Weighted Average Grant Date Fair Value
Stock awards outstanding December 28, 2013 | 130,238 |  |  | $ | 10.75 |
Restricted shares granted | 25,678 |  |  | 19.67 |
Restricted shares where the restriction lapsed | — |  |  | — |
Restricted shares forfeited | — |  |  | — |
Stock awards outstanding January 3, 2015 | 155,916 |  |  | $ | 12.22 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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