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Revenue - Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |
Revenue | $ 476,111,000 | $ 500,562,000 |
Description of timing | The significant majority of the Company’s contracts with customers have an initial term of one year or less, with renewable one year service terms, cancellable by either party upon 30 to 90 days' notice after an initial period of 60 to 120 days. |  |
Renewal term | 1 year |  |
Transferred at Point in Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | $ 0 |  | $ 0
Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities | $ 0 |  | $ 0
Minimum |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Cancellation notice period | 30 days |  |
Initial period preceding cancellation notice | 60 days |  |
Maximum |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Cancellation notice period | 90 days |  |
Initial period preceding cancellation notice | 120 days |  |
Housekeeping |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percent of revenue | 49.00% | 49.00% |
Revenue | $ 233,134,000 | $ 245,161,000 |
Dietary |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percent of revenue | 51.00% | 51.00% |
Revenue | $ 242,977,000 | $ 255,401,000 |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
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