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Segment Information - Revenues by Client Services (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 392,734 | $ 360,165 | $ 1,164,097 | $ 1,070,767
Housekeeping Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 171,802 | 158,019 | 510,080 | 471,692
Dietary Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 153,150 | 132,405 | 447,943 | 389,461
Laundry and Linen Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 67,363 | 69,060 | 204,529 | 207,887
Maintenance Services and Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 419 | $ 681 | $ 1,545 | $ 1,727

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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=63488584&loc=d3e20235-122688 + Details
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