CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Class A Common Stock	Class T Common Stock	Common Stock Class A Common Stock	Common Stock Class T Common Stock	Additional Paid-in Capital	Cumulative Distributions and Net Losses
Balance (in shares) at Dec. 31, 2018				9,386,908	294,963
Balance at Dec. 31, 2018	$ 54,591			$ 94	$ 3	$ 79,907	$ (25,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(5,474)						(5,474)
Issuance of common stock (in shares)				402,014	10,105
Issuance of common stock	3,791			$ 4		3,787
Transfers from redeemable common stock	21					21
Redemptions of common stock (in shares)					(2,245)
Redemptions of common stock	(21)					(21)
Distributions declared	(4,094)						(4,094)
Balance (in shares) at Sep. 30, 2019				9,788,922	302,823
Balance at Sep. 30, 2019	48,814			$ 98	$ 3	83,694	(34,981)
Balance (in shares) at Jun. 30, 2019				9,718,110	299,406
Balance at Jun. 30, 2019	50,726			$ 97	$ 3	83,012	(32,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,207)						(1,207)
Issuance of common stock (in shares)				70,812	3,417
Issuance of common stock	683			$ 1		682
Distributions declared	(1,388)						(1,388)
Balance (in shares) at Sep. 30, 2019				9,788,922	302,823
Balance at Sep. 30, 2019	48,814			$ 98	$ 3	83,694	(34,981)
Balance (in shares) at Dec. 31, 2019		9,841,004	306,292	9,841,004	306,292
Balance at Dec. 31, 2019	47,278			$ 98	$ 3	84,184	(37,007)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,430)						(6,430)
Issuance of common stock (in shares)				57,292	4,682
Issuance of common stock	522			$ 1		521
Transfers from redeemable common stock	807					807
Redemptions of common stock (in shares)				(24,567)
Redemptions of common stock	(207)					(207)
Distributions declared	(1,287)						(1,287)
Balance (in shares) at Sep. 30, 2020		9,873,729	310,974	9,873,729	310,974
Balance at Sep. 30, 2020	40,683			$ 99	$ 3	85,305	(44,724)
Balance (in shares) at Jun. 30, 2020				9,867,625	310,418
Balance at Jun. 30, 2020	41,521			$ 99	$ 3	84,642	(43,223)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,501)						(1,501)
Issuance of common stock (in shares)				6,935	556
Issuance of common stock	63					63
Transfers from redeemable common stock	607					607
Redemptions of common stock (in shares)				(831)
Redemptions of common stock	(7)					(7)
Balance (in shares) at Sep. 30, 2020		9,873,729	310,974	9,873,729	310,974
Balance at Sep. 30, 2020	$ 40,683			$ 99	$ 3	$ 85,305	$ (44,724)