Investments in Unconsolidated Joint Ventures - Statement of operations (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Revenues
Rental revenues	$ 1,260	$ 967	$ 577	$ 447	$ 1,024	$ 1,991	$ 3,225	$ 1,563
Total revenues	7,554	2,447	833	493	1,326	3,773	28,382	1,826
Operating Expenses
Property operating expenses	548	805	1,549	1,752	3,301	4,106	7,785	8,590
Real estate taxes	74	76	79	79	158	234	308	254
General and administrative	1,139	1,255	1,273	1,243	2,516	3,771	4,646	5,217
Total operating expenses	9,195	4,712	4,063	4,237	8,300	13,012	41,241	18,446
Operating loss	(1,641)	(2,265)	(3,230)	(3,744)	(6,974)	(9,239)	(12,859)	7,576
Interest expense	(802)	(692)	(883)	(603)	(1,486)	(2,178)	(3,012)	(1,540)
Interest expense - amortization of deferred finance costs	(402)	(160)	(623)	(193)	(816)	(976)	(1,134)	(261)
Net loss attributable to common stockholders	(2,538)	$ (1,352)	(5,032)	(6,924)	(11,956)	(13,308)	(17,752)	4,863
Our equity in net loss from unconsolidated joint ventures	746		$ (264)	(372)	$ (636)	$ (636)	$ (555)	$ (1,571)
Unconsolidated Joint Ventures
Revenues
Rental revenues	3,263			2,979
Total revenues	3,263			2,979
Operating Expenses
Property operating expenses	1,112			1,065
Real estate taxes	25			25
General and administrative	2			2
Amortization	583			731
Depreciation	961			984
Total operating expenses	2,683			2,807
Operating loss	580			172
Interest expense	(930)			(939)
Interest expense - amortization of deferred finance costs	(72)			(72)
Interest income (expense) - change in fair market value of interest rate swap	(1,681)			396
Net loss attributable to common stockholders	$ 1,259			$ (1,235)