Real Estate Investments - Types of property Development and Improvement (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Real estate investments
Invested in projects	$ 16,690,000
Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	13,384,000	$ 15,052,000
Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	3,955,000	2,121,000
ALF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	4,491,000	10,266,000
ALF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	3,941,000	1,826,000
SNF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	8,893,000	4,786,000
SNF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	$ 14,000
Other | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects		$ 295,000