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Leases and Management Agreements with Five Star - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 394,339	$ 255,827	$ 1,247,117	$ 784,116
Basic housing and support services
Disaggregation of Revenue [Line Items]
Revenues	208,941	88,623	659,240	265,117
Medicare and Medicaid programs
Disaggregation of Revenue [Line Items]
Revenues	38,882	6,902	131,460	23,333
Private pay and other third party payer SNF services
Disaggregation of Revenue [Line Items]
Revenues	42,278	12,291	135,474	36,317
Residents fees and services
Disaggregation of Revenue [Line Items]
Revenues	$ 290,101	$ 107,816	$ 926,174	$ 324,767

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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