Investments in Unconsolidated Joint Ventures - Statement of operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Expenses
Equity in net loss from unconsolidated joint ventures	$ (372)	$ (991)
Unconsolidated Joint Ventures
Revenues
Rental revenues	2,979	2,998
Total revenues	2,979	2,998
Operating Expenses
Property operating expenses	1,065	706
Real estate taxes	25	11
General and administrative	2	2
Amortization	731	1,251
Depreciation	984	876
Total operating expenses	2,807	2,846
Operating income	172	152
Interest expense, net	(939)	(954)
Interest expense - amortization of deferred finance costs	(72)	(1,666)
Interest expense - change in fair market value of interest rate swap	(396)
Net loss	(1,235)	(2,468)
Equity in net loss from unconsolidated joint ventures	$ (372)	$ (991)