Revenue - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 435,947	$ 455,606	$ 1,337,126	$ 1,393,818
Renewal term			1 year
Description of timing			The Company’s contracts with customers typically provide for an initial term of one year, 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 September 30, 2020, the Company had $521.4 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 29.3% 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.
Transferred at point in time
Disaggregation of Revenue [Line Items]
Contract liabilities	400		$ 400		$ 300
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]
Revenue	223,423	225,347	$ 675,366	$ 687,392
Percent of revenue			50.50%	49.30%
Dietary
Disaggregation of Revenue [Line Items]
Revenue	$ 212,524	$ 230,259	$ 661,760	$ 706,426
Percent of revenue			49.50%	50.70%