Mortgage Notes and Credit Facility - Summary of Company's Mortgage Notes and Credit Facility (Details) - USD ($) $ in Thousands		9 Months Ended		12 Months Ended
		Sep. 30, 2023		Dec. 31, 2022
Debt Instrument [Line Items]
Deferred financing costs, net		$ (30)		$ (300)
Total mortgage notes		113,624		113,760
Mortgage notes
Debt Instrument [Line Items]
Principal Balance Outstanding		115,471		115,838
Deferred financing costs, net		(1,075)		(1,202)
Mortgage discount, net		(772)		(876)
Total mortgage notes		$ 113,624		113,760
Mortgage notes | Caroline West Gray
Debt Instrument [Line Items]
Interest Rate		5.44%
Maturity Date		Dec. 01, 2029
Principal Balance Outstanding		$ 45,911		45,911
Mortgage notes | Caroline Post Oak
Debt Instrument [Line Items]
Interest Rate		5.44%
Maturity Date		Dec. 01, 2029
Principal Balance Outstanding		$ 40,528		40,528
Mortgage notes | Coda on Centre
Debt Instrument [Line Items]
Interest Rate		4.28%
Maturity Date		May 30, 2029
Principal Balance Outstanding		$ 29,032		$ 29,399
Credit Facility [Member]
Debt Instrument [Line Items]
Maturity Date		Aug. 29, 2024	[1]	Aug. 31, 2023
Maximum Facility Size	[1]	$ 8,000
Secured credit facility	[1]			$ 40,200
SOFR | Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate, variable	[1]	2.45%

[1] The Credit Facility has a one-year extension of the maturity date at the Company's request.