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Goodwill and Other Intangible Assets, Net (Details Textual) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2012 | Jul. 03, 2011 | Jul. 01, 2012 | Jul. 03, 2011
Goodwill And Other Intangible Assets Net (Textual) [Abstract] |  |  |  |
Amortization expense | $ 4.8 | $ 5.0 | $ 9.6 | $ 9.1
Facility Management Contracts [Member] |  |  |  |
Goodwill And Other Intangible Assets Net (Textual) [Abstract] |  |  |  |
Weighted average period |  |  | 1.7 |

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- Definition For intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination) which have renewal or extension terms, this element represents the weighted-average period prior to the next renewal or extension (both explicit and implicit), by major intangible asset class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS142-3 -Paragraph b -Subparagraph d -Appendix A1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition Aggregate amount of intangible asset amortization recognized as expense during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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