Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional-Paid-In-Capital [Member]	Distributions in Excess of Net Income [Member]	Total Stockholders' Equity [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2019	$ 85,649	$ 1	$ 160,308	$ (109,889)	$ 50,420	$ 35,229
Beginning Balance (in shares) at Dec. 31, 2019		13,537,856
Common stock dividends	(2,708)			(2,708)	(2,708)
Stock-based compensation	80		80		80
Distributions to noncontrolling interest	(1,437)					(1,437)
Net income	2,007			1,348	1,348	659
Ending Balance at Mar. 31, 2020	83,591	$ 1	160,388	(111,249)	49,140	34,451
Ending Balance (in shares) at Mar. 31, 2020		13,537,856
Beginning Balance at Dec. 31, 2019	85,649	$ 1	160,308	(109,889)	50,420	35,229
Beginning Balance (in shares) at Dec. 31, 2019		13,537,856
Net income	3,333
Ending Balance at Jun. 30, 2020	83,315	$ 1	160,872	(111,707)	49,166	34,149
Ending Balance (in shares) at Jun. 30, 2020		13,627,220
Beginning Balance at Mar. 31, 2020	83,591	$ 1	160,388	(111,249)	49,140	34,451
Beginning Balance (in shares) at Mar. 31, 2020		13,537,856
Common stock dividends	(1,363)			(1,363)	(1,363)
Stock-based compensation	484		484		484
Issuance of shares		89,364
Distributions to noncontrolling interest	(723)					(723)
Net income	1,326			905	905	421
Ending Balance at Jun. 30, 2020	83,315	$ 1	160,872	(111,707)	49,166	34,149
Ending Balance (in shares) at Jun. 30, 2020		13,627,220
Beginning Balance at Dec. 31, 2020	84,297	$ 1	161,092	(111,129)	49,964	34,333
Beginning Balance (in shares) at Dec. 31, 2020		13,627,220
Common stock dividends	(4,087)			(4,087)	(4,087)
Stock-based compensation	107		107		107
Distributions to noncontrolling interest	(2,170)					(2,170)
Net income	2,572			1,727	1,727	845
Ending Balance at Mar. 31, 2021	80,719	$ 1	161,199	(113,489)	47,711	33,008
Ending Balance (in shares) at Mar. 31, 2021		13,627,220
Beginning Balance at Dec. 31, 2020	84,297	$ 1	161,092	(111,129)	49,964	34,333
Beginning Balance (in shares) at Dec. 31, 2020		13,627,220
Net income	4,237
Ending Balance at Jun. 30, 2021	80,899	$ 1	161,823	(113,737)	48,087	32,812
Ending Balance (in shares) at Jun. 30, 2021		13,773,853
Beginning Balance at Mar. 31, 2021	80,719	$ 1	161,199	(113,489)	47,711	33,008
Beginning Balance (in shares) at Mar. 31, 2021		13,627,220
Common stock dividends	(1,378)			(1,378)	(1,378)
Stock-based compensation	624		624		624
Issuance of shares		146,633
Distributions to noncontrolling interest	(731)					(731)
Net income	1,665			1,130	1,130	535
Ending Balance at Jun. 30, 2021	$ 80,899	$ 1	$ 161,823	$ (113,737)	$ 48,087	$ 32,812
Ending Balance (in shares) at Jun. 30, 2021		13,773,853