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Common Stock - Share-based Compensation (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Jan. 02, 2016 | Jan. 03, 2015 | Dec. 28, 2013 | Oct. 23, 2014 | Feb. 13, 2014 | Aug. 10, 2012
Share-Based Compensation |  |  |  |  |  |
Share-based compensation expense | $ 5,800,000 | $ 5,300,000 | $ 2,900,000 |  |  |
Non-employee compensation expense | 11,000 | 271,000 | 147,000 |  |  |
Adjustments Related to Tax Withholding for Share-based Compensation | $ 668,000 | $ 1,222,000 | $ 730,000 |  |  |
Common Stock Repurchases and Retirements |  |  |  |  |  |
Share repurchase program, amount authorized to be repurchased |  |  |  | $ 30,000,000 | $ 15,000,000 | $ 5,000,000
Number of shares repurchased and retired | 477,292 | 971,515 | 118,968 |  |  |
Aggregate price of shares repurchased and retired | $ 12,806,000 | $ 25,492,000 | $ 2,190,000 |  |  |
Amount available for future repurchases | $ 8,100,000 | $ 20,900,000 | $ 23,100,000 |  |  |
Restricted shares |  |  |  |  |  |
Share-Based Compensation |  |  |  |  |  |
Vested (in shares) | 106,504 | 149,195 | 134,384 |  |  |
Redemption of vested restricted shares in order to pay employee tax withholdings (in shares) | 28,900 | 41,470 | 37,642 |  |  |
Adjustments Related to Tax Withholding for Share-based Compensation | $ 700,000 | $ 1,200,000 | $ 700,000 |  |  |
Employees and directors |  |  |  |  |  |
Share-Based Compensation |  |  |  |  |  |
Share-based compensation expense | $ 5,800,000 | $ 5,300,000 | $ 2,900,000 |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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