Real Estate Investments - Types of property Development and Improvement (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Real estate investments
Invested in projects	$ 5,978,000
Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	4,854,000	$ 6,957,000
Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	1,119,000	259,000
ALF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	2,386,000	4,507,000
ALF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	1,116,000	256,000
SNF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	2,468,000	2,450,000
SNF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	$ 3,000
Other | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects		$ 3,000