CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	[1]
Revenues:
Rental and other revenue from real estate properties	$ 6,765	$ 6,261	$ 7,097	$ 6,886	$ 6,211	$ 6,127	$ 5,205	$ 5,087	$ 13,983	$ 10,292	$ 20,244	$ 16,419	$ 27,009	$ 22,630
Other income	157	161	190	244	223	198	203	175	434	378	595	576	752	799
Total revenues	6,922	6,422	7,287	7,130	6,434	6,325	5,408	5,262	14,417	10,670	20,839	16,995	27,761	23,429
Expenses:
Real estate operating expenses—including $101 and $160 to related parties	3,090	2,741	3,325	3,176	2,966	2,952	2,393	2,384	6,501	4,777	9,242	7,729	12,332	10,695
Interest expense	1,931	1,870	2,049	1,946	1,747	1,779	1,471	1,442	3,995	2,913	5,865	4,692	7,796	6,439
General and administrative—including $575 and $530 to related party	2,636	2,430	2,481	2,544	2,476	2,002	2,452	2,453	5,025	4,905	7,455	6,907	10,091	9,383
Depreciation	(1,568)	(1,373)	(1,428)	(1,547)	(1,408)	(1,369)	(1,076)	(1,074)	(2,975)	(2,150)	(4,348)	(3,519)	(5,916)	(4,927)
Total expenses	9,225	8,414	9,283	9,213	8,597	8,102	7,392	7,353	18,496	14,745	26,910	22,847	36,135	31,444
Total revenues less total expenses	(2,303)	(1,992)	(1,996)	(2,083)	(2,163)	(1,777)	(1,984)	(2,091)	(4,079)	(4,075)	(6,071)	(5,852)	(8,374)	(8,015)
Equity in loss from unconsolidated joint ventures	(2,150)	(2,390)	(2,218)	(2,068)	(1,148)	(1,627)	(2,566)	253	(4,286)	(2,313)	(6,676)	(3,940)	(8,826)	(5,088)
Equity in earnings from sale of unconsolidated joint venture properties	9,932	0	0	0	11,467	0	0	26,402		26,402		26,402	9,932	37,869
Gain on sale of real estate	680	9,938	0	0	0	424	0	437		437	9,938	861	10,618	861
Loss on extinguishment of debt	0	(1,387)	0	0	0	0	0	0		0	(1,387)	0	(1,387)	0
Income from continuing operations	6,159	4,169	(4,214)	(4,151)	8,156	(2,980)	(4,550)	25,001	(8,365)	20,451	(4,196)	17,471	1,963	25,627
Provision for taxes	51	98	59	62	57	97	101	(253)	121	(152)	219	(55)	270	2
Income from continuing operations, net of taxes	6,108	4,071	(4,273)	(4,213)	8,099	(3,077)	(4,651)	25,254	(8,486)	20,603	(4,415)	17,526	1,693	25,625
(Income) attributable to non-controlling interests	40	(799)	(44)	(34)	(26)	(34)	(38)	(32)	(78)	(70)	(877)	(104)	(837)	(130)
Net income attributable to common stockholders	$ 6,148	$ 3,272	$ (4,317)	$ (4,247)	$ 8,073	$ (3,111)	$ (4,689)	$ 25,222	$ (8,564)	$ 20,533	$ (5,292)	$ 17,422	$ 856	$ 25,495
Weighted average number of shares of common stock outstanding:
Basic (in shares)		15,913,975	15,900,316	15,886,493	15,744,233	15,635,953	14,411,940	14,242,076	15,893,443	14,327,477	15,900,362	14,768,429	15,965,631	15,014,385
Diluted (in shares)		16,113,975	15,900,316	15,886,493	15,944,233	15,635,953	14,411,940	14,442,076	15,893,443	14,527,477	15,900,362	14,968,429	16,165,631	15,214,385
Basic earnings (loss) per share (in dollars per share)	$ 0.38	$ 0.21	$ (0.27)	$ (0.27)	$ 0.51	$ (0.20)	$ (0.33)	$ 1.77	$ (0.54)	$ 1.43	$ (0.33)	$ 1.18	$ 0.05	$ 1.70
Diluted earnings (loss) per share (in dollars per share)	$ 0.38	$ 0.20	$ (0.27)	$ (0.27)	$ 0.51	$ (0.20)	$ (0.33)	$ 1.75	$ (0.54)	$ 1.41	$ (0.33)	$ 1.16	$ 0.05	$ 1.68

[1] * Amounts restated See footnotes 2 and 16 for more information.