Investments in Unconsolidated Joint Ventures - Statement of operations (Details) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Revenues
Rental revenues	$ 1,231	$ 1,260	$ 967	$ 577	$ 447	$ 2,491	$ 1,024	$ 1,991	$ 3,225	$ 1,563
Total revenues	6,359	7,345	2,425	833	493	13,704	1,326	3,751	27,265	1,826
Operating Expenses
Property operating expenses	766	804	897	1,888	1,907	1,570	3,795	4,692	5,583	9,120
Real estate taxes	416	390	271	79	79	806	158	429	724	254
General and administrative	1,503	1,502	1,440	1,387	1,243	3,005	2,630	4,070	5,133	5,217
Total operating expenses	8,649	9,578	5,162	4,516	4,392	18,227	8,908	14,070	37,880	18,976
Operating loss	(2,290)	(2,233)	(2,737)	(3,683)	(3,899)	(4,523)	(7,582)	(10,319)	(10,615)	7,046
Interest expense	(3,295)	(2,769)	(2,367)	(1,772)	(875)	(6,064)	(2,647)	(5,014)	(7,922)	(1,540)
Interest expense - amortization of deferred finance costs	(378)	(436)	(269)	(683)	(261)	(814)	(944)	(1,213)	(1,521)	(261)
Net loss attributable to common stockholders	(223)	(5,131)	$ (3,608)	(6,434)	(7,419)	(5,354)	(13,853)	(17,461)	(20,805)	4,333
Our equity in net loss from unconsolidated joint ventures	4,560	$ 746		(264)	$ (372)	5,306	(636)	$ (636)	$ (555)	$ (1,571)
Unconsolidated Joint Ventures
Revenues
Rental revenues	2,759			3,185		6,022	6,164
Total revenues	2,759			3,185		6,022	6,164
Operating Expenses
Property operating expenses	769			931		1,881	1,996
Real estate taxes	17			25		42	50
General and administrative	(12)			3		(10)	5
Amortization	493			583		1,076	1,314
Depreciation	762			988		1,723	1,972
Total operating expenses	2,029			2,530		4,712	5,337
Operating loss	730			655		1,310	827
Gain on sale of real estate	8,981					8,981
Gain on sale of interest rate swap	2,005					2,005
Interest expense	(782)			(957)		(1,712)	(1,896)
Interest expense - amortization of deferred finance costs	(56)			(73)		(128)	(145)
Interest (expense) income - change in fair market value of interest rate swap	1,528			341		(153)	737
Net loss attributable to common stockholders	$ 9,350			$ (716)		$ 10,609	$ (1,951)