Revenues - Schedule of Rental Revenues (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Above (below) market lease amortization, net			$ (233,000)	$ (595,000)
Total revenues	$ 8,620,000	$ 7,810,000	25,827,000	24,955,000
Base rents
Disaggregation of Revenue [Line Items]
Base Rents and revenue	6,003,000	5,698,000	17,789,000	18,180,000
Expense recoveries - variable lease revenue
Disaggregation of Revenue [Line Items]
Base Rents and revenue	1,759,000	1,698,000	5,674,000	5,953,000
Percentage rent - variable lease revenue
Disaggregation of Revenue [Line Items]
Base Rents and revenue	85,000	71,000	369,000	337,000
Rental revenues
Disaggregation of Revenue [Line Items]
Straight-line rents	203,000	3,000	665,000	(42,000)
Above (below) market lease amortization, net	105,000	90,000	233,000	411,000
Total rental revenue, gross	8,155,000	7,560,000	24,730,000	24,839,000
Credit adjustments on operating lease receivables	185,000	(38,000)	504,000	(510,000)
Total revenues	$ 8,340,000	$ 7,522,000	$ 25,234,000	$ 24,329,000