Real Estate Investments - Development and Improvement Projects (Details) - MC Units - Developments - Real Estate Development Commitments - Real Estate Investment Completed Projects - Illinois $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) item property
Completed development and improvement projects
Number of Properties | property	1
Number of Beds/Units | item	66
Total Investment | $	$ 13,974