Business Developments and Other Significant Transactions - Narrative (Details)	Aug. 30, 2019 facility	Oct. 01, 2018 extension center	Dec. 31, 2019 center	Oct. 01, 2019	Sep. 30, 2019 center	Sep. 01, 2019	Aug. 30, 2019 extension	Aug. 30, 2019 center	May 22, 2019	May 13, 2019 center	Apr. 30, 2019 center	Mar. 31, 2019 center
Business Acquisition [Line Items]
Number of nursing center facilities leased		34	47
Number of skilled nursing centers under lease		23
Number of skilled nursing centers participating in QIPP		11				12				4	11	1
Lease extension period	10 years	10 years
Operating lease, initial term	12 years	12 years
Operating lease, number of lease extensions allowed | extension		2					2
Annual lease fixed escalators, percent		2.15%		2.15%
Number of nursing center facilities terminated					10				10
Kentucky Properties | Discontinued Operations
Business Acquisition [Line Items]
Number of nursing center facilities terminated	10							10