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Share-Based Compensation (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 31, 2013 | Sep. 25, 2013 | Sep. 26, 2012 | Sep. 25, 2013 | Sep. 26, 2012
Total share-based compensation [Abstract] |  |  |  |  |
Total share-based compensation |  | $ 1,053,000 | $ 1,128,000 | $ 3,434,000 | $ 2,794,000
Performance shares [Member] |  |  |  |  |
Total share-based compensation [Abstract] |  |  |  |  |
Total share-based compensation |  | 735,000 | 778,000 | 2,377,000 | 1,752,000
Restricted Stock Units [Abstract] |  |  |  |  |
Equity awards granted (in shares) | 0.3 |  |  |  |
Employee performance based target cash awards | 2,100,000 |  |  |  |
Equity awards, grant date fair value (in dollars per share) | $ 8.05 |  |  |  |
Performance period | 3 years |  |  |  |
Cash payments |  |  |  | 900,000 |
Maximum common stock shares issued (in shares) |  |  |  | 0.3 |
Unrecognized compensation cost [Abstract] |  |  |  |  |
Unrecognized compensation cost related to all unvested restricted stock unit awards outstanding |  | 5,000,000 |  | 5,000,000 |
Unrecognized compensation cost, expected weighted average period |  |  |  | 1 year 4 months 28 days |
Stock options [Member] |  |  |  |  |
Total share-based compensation [Abstract] |  |  |  |  |
Total share-based compensation |  | 136,000 | 200,000 | 433,000 | 692,000
Unrecognized compensation cost [Abstract] |  |  |  |  |
Unrecognized compensation cost related to unvested stock option awards outstanding |  | 200,000 |  | 200,000 |
Unrecognized compensation cost, expected weighted average period |  |  |  | 0 years 3 months 22 days |
Restricted stock units [Member] |  |  |  |  |
Total share-based compensation [Abstract] |  |  |  |  |
Total share-based compensation |  | 182,000 | 150,000 | 624,000 | 350,000
Restricted Stock Units [Abstract] |  |  |  |  |
Equity awards granted (in shares) |  |  |  | 0.1 |
Equity awards, grant date fair value (in dollars per share) |  |  |  | $ 5.95 |
Maximum common stock shares issued (in shares) |  |  |  | 0.1 |
Unrecognized compensation cost [Abstract] |  |  |  |  |
Unrecognized compensation cost related to all unvested restricted stock unit awards outstanding |  | $ 400,000 |  | $ 400,000 |
Unrecognized compensation cost, expected weighted average period |  |  |  | 0 years 7 months 0 days |
Minimum [Member] | Performance shares [Member] |  |  |  |  |
Restricted Stock Units [Abstract] |  |  |  |  |
Minimum percentage of target awards to be earned (in hundredths) | 0.00% |  |  |  |
Maximum [Member] | Performance shares [Member] |  |  |  |  |
Restricted Stock Units [Abstract] |  |  |  |  |
Maximum percentage of target awards to be earned (in hundredths) | 200.00% |  |  |  |

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- Definition Description of the maximum percentage of performance shares and cash target awards that could be earned. + References No definition available. + Details
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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 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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 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 Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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