Summary of Significant Accounting Policies Disaggregation of Revenues (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Resident fees and services	$ 16,081,000	$ 10,695,000
Resident Fees and Services
Resident fees and services	16,081,000	10,695,000
Senior Housing-RIDEA
Resident fees and services	16,081,000	10,695,000
Senior Housing-RIDEA | Transferred at Point in Time
Resident fees and services	422,000	182,000
Senior Housing-RIDEA | Transferred over Time
Resident fees and services	15,659,000	10,513,000
Medicaid | Resident Fees and Services
Resident fees and services	1,708,000	1,608,000
Private and Other Payors | Resident Fees and Services
Resident fees and services	$ 14,373,000	$ 9,087,000