Management agreement, fees and transactions with related party (Details) - USD ($)			1 Months Ended		8 Months Ended	12 Months Ended
	Mar. 10, 2022	May 08, 2008	Dec. 31, 2021	Jun. 19, 2015	Oct. 31, 2020	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020	Dec. 30, 2021
Management agreement, fees and transactions with related party (Details) [Line Items]
Fees charged to operation						$ 1,429,000
Commissions, charged to operations					$ 26,000	$ 164,000	$ 209,000	$ 190,000
Equity contributions percentage						50.00%
Maturity dates				10 years
Secured loans receivable						$ 5,300,000
Due to affiliate							3,252,000
Trustee fee expense						$ 0	0	21,000
Pro-rata share based funding amount	$ 300,000
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%
Grande Rotunda, LLC [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Ownership by parent						60.00%
Ownership by noncontrolling owners						40.00%
Aggregate outstanding principal balance							4,000,000
Accrued but unpaid interest							1,292,000
Principal amount on notes paid off			$ 31,000,000			$ 7,000,000			$ 31,000,000
Repayment to affiliate			$ 3,300,000			2,800,000
Due to affiliate							3,300,000
Loan commission							150,000
Rotunda Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission						4,777,000
Damascus Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission						917,000
Westridge Square Property [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission						525,000
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
WestFREIT, Corp [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Loan commission							54,000
Robert S. Hekemian [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Trustee fee expense							469,000
Wayne PSC [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Pro-rata share based funding amount	500,000
Wayne PSC [Member] | Ownership [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Equity interest						40.00%
H-TPKE, LLC (“H-TPKE”) [Member] | Ownership [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Equity interest						60.00%
H-TPKE, LLC [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Percentage of aggregate membership interests						73.00%
Promissory note						$ 600,000
FREIT [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Ownership by parent						40.00%
Promissory note						$ 400,000
Pro-rata share based funding amount	$ 200,000
Director [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Fees charged to operation							2,127,000	2,201,000
Commissions and reimbursements						701,000	548,000	982,000
Accounts Payable						105,000	185,000
Director [Member] | Minimum [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Increase aggregate amount		$ 2,000,000
Director [Member] | Maximum [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Increase aggregate amount		$ 4,000,000
Affiliated Entity 1 [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Consulting services expense						6,388,000	236,500	125,000
Robert S. Hekemian [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Consulting services expense						0	0	8,000
Trustee fee expense						831,000		508,000
Consulting services expense						5,000
Consulting fee quarterly installments						15,000
Robert S. Hekemian, Jr. [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Trustee fee expense								100,000
Allan Tubin [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Trustee fee expense						40,000	30,000	26,000
David Hekemian [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Trustee fee expense						$ 150,000	57,000	$ 50,000
Letter of Credit [Member]
Management agreement, fees and transactions with related party (Details) [Line Items]
Sales commissions							$ 32,500