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Segment Information (Revenues By Client Services) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 298,549 | $ 272,681 | $ 846,057 | $ 800,396
Housekeeping Services [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 132,340 | 124,049 | 381,284 | 367,599
Laundry and Linen Services [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 60,480 | 60,846 | 180,782 | 179,621
Dietary Services [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 105,023 | 86,528 | 281,147 | 249,735
Maintenance Services and Other [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 706 | $ 1,258 | $ 2,844 | $ 3,441

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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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