Real Estate Investments - Types of property Development and Improvement (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Real estate investments
Invested in projects	$ 11,591,000
Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	10,348,000	$ 13,012,000
Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	3,053,000	1,068,000
ALF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	4,487,000	8,520,000
ALF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	3,039,000	893,000
SNF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	5,861,000	4,492,000
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		$ 175,000