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Investment in tenancy-in-common (Details) - USD ($)	3 Months Ended		6 Months Ended
Investment in tenancy-in-common (Details) - USD ($)	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Oct. 31, 2022	Feb. 28, 2020
Investment in tenancy-in-common (Details) [Line Items]
Investment in tenancy-in-common	$ 18,610,000		$ 18,610,000		$ 18,798,000
Loss on investment	(121,000)	$ (32,000)	$ (188,000)	$ (156,000)
Percentage of management fees of rent collected			5.00%
Management fees	106,000	99,000	$ 208,000	197,000
F R E I Ts Investment [Member]
Investment in tenancy-in-common (Details) [Line Items]
Investment in tenancy-in-common	18,600,000		18,600,000		$ 18,800,000
Loss on investment	$ 121,000	$ 32,000	$ 188,000	$ 156,000
S And A Commercial Associates Limited Partnership [Member]
Investment in tenancy-in-common (Details) [Line Items]
Percentage of ownership interest						65.00%
Pierre Towers [Member]
Investment in tenancy-in-common (Details) [Line Items]
Percentage of ownership interest						100.00%
Pierre Towers, LLC [Member]
Investment in tenancy-in-common (Details) [Line Items]
Percentage of ownership interest						100.00%
TIC Agreement [Member]
Investment in tenancy-in-common (Details) [Line Items]
Percentage of ownership interest						65.00%