Real Estate Investments - Types of property Development and Improvement (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Real estate investments
Invested in projects	$ 17,390,000
Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	13,012,000	$ 18,623,000
Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	1,068,000	1,763,000
ALF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	8,520,000	14,653,000
ALF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	893,000	1,048,000
SNF | Developments | Development and Improvement Commitments
Real estate investments
Invested in projects	4,492,000	3,970,000
SNF | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects		500,000
Other | Improvements | Development and Improvement Commitments
Real estate investments
Invested in projects	$ 175,000	$ 215,000