Basis of Presentation - Additional Information (Detail)	Jun. 30, 2020 Community State Resident
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Senior housing communities operated by company	124
Number of states in which senior housing communities operated | State	23
Aggregate capacity of residents in company operated senior housing communities | Resident	15,600
Senior housing communities owned by company	79
Senior housing communities on lease by company	39
Senior housing communities managed by company	6