Leases - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019 lease community
Lessee, Lease, Description [Line Items]
Number of communities leased | community	333
Number of operating communities leased	242
Number of financing communities leased	91
Operating lease, weighted average remaining lease term	6 years 10 months 24 days
Finance lease, weighted average remaining lease term	8 years 4 months 24 days
Operating lease, weighted average discount rate	8.60%
Finance lease, weighted average discount rate	7.90%
Minimum
Lessee, Lease, Description [Line Items]
Renewal term	5 years
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	20 years