Management agreement, fees and transactions with related party (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Management agreement, fees and transactions with related party (Details) [Line Items]
Fees charged to operation	$ 343,000	$ 318,000	$ 1,002,000	$ 1,108,000
Commissions and reimbursements	155,000	167,000	477,000	515,000
Commissions, charged to operations	101,000	105,000	166,000	164,000
Fees incurred	159,000	94,000	180,000	6,388,000
Modification and extension			21,000
Director fee expense			479,000
Executive compensation				429,000
Rotunda Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Additional proceeds received			129,000
Loan commission			4,777,000
Westridge Square Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Additional proceeds received			20,000
Loan commission			525,000
Damascus Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Additional proceeds received			10,000
Loan commission			917,000
Preakness Shopping Center [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission			94,000
Boulders Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission			75,000
Robert S. Hekemian, Jr. [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Director fee expense	11,000		32,000
Executive compensation		10,000		30,000
Allan Tubin [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Director fee expense	15,000		$ 61,000
Executive compensation		13,000		$ 43,000
FREIT [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Director fee expense	$ 165,000
Executive compensation		$ 150,000
Minimum [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Management fees equal percentage			4.00%
Maximum [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Management fees equal percentage			5.00%