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Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 446,960 | $ 455,606 | $ 462,101 | $ 476,111 | $ 494,952 | $ 505,500 | $ 501,587 | $ 500,562 | $ 1,840,778 | $ 2,002,601 | $ 1,861,206
Renewable service term period |  |  |  |  |  |  |  |  | 1 year |  |
Description of timing |  |  |  |  |  |  |  |  | The Company recognizes revenue as it satisfies the performance obligations associated with contracts with customers, which due to the nature of the goods and services provided by the Company, are satisfied over time. Contracts may contain transaction prices that are fixed, variable or both. The Company’s contracts with customers typically provide for 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.At December 31, 2019, the Company had $696.1 million related to performance obligations that were unsatisfied or partially unsatisfied for which the Company expects to recognize revenue. The Company expects to recognize revenue on approximately 24.0% of the remaining performance obligations over the next 12 months, with the balance to be recognized thereafter. These amounts exclude variable consideration primarily related to performance obligations that consists of a series of distinct service periods with revenues based on future performance that cannot be estimated at contract inception. The Company also has elected to apply the practical expedient that permits exclusion of information about the remaining performance obligations with original expected durations of one year or less. |  |
Renewal term |  |  |  |  |  |  |  |  | 1 year |  |
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 |  |
Transferred at Point in Time |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contract liabilities | 300 |  |  |  | 200 |  |  |  | $ 300 | 200 |
Transferred over Time |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contract liabilities | $ 2,800 |  |  |  | $ 4,600 |  |  |  | $ 2,800 | 4,600 |
Transferred over Time | Minimum |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Service agreement period |  |  |  |  |  |  |  |  | 30 days |  |
Transferred over Time | Maximum |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Service agreement period |  |  |  |  |  |  |  |  | 60 days |  |
Housekeeping |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 909,500 | 967,600 | 974,700
Dietary |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 931,300 | $ 1,035,000 | $ 886,500

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