Real Estate Investments (Details) - Purchase Price Allocation of Properties Acquired - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Land	$ 2,320	$ 7,666
Building and improvements	9,281	35,629
Acquired lease intangible asset	0	1,763
Deferred charges	0	818
Assets acquired	11,601	45,876
Liabilities
Acquired lease intangible liability	0	1,680
Liabilities assumed	$ 0	$ 1,680