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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment.

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Investment in Tenancy-In-Common (Details) - USD ($)		12 Months Ended
Investment in Tenancy-In-Common (Details) - USD ($)	Feb. 28, 2020	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Investment in Tenancy in Common [Line Items]
Investment in tenancy-in-common		$ 17,512,000	$ 18,137,000
Loss on investment in TIC		(170,000)	(271,000)	$ (228,000)
Expenses reimbursed to FREIT				5,316,000
Percentage of management fees of rent collected		5.00%
Management fees		$ 1,351,000	1,342,000	1,451,000
Sinatra Properties, LLC [Member]
Investment in Tenancy in Common [Line Items]
Expenses reimbursed to FREIT		(166,000)
Hekemian & Co [Member]
Investment in Tenancy in Common [Line Items]
Management fees		35,700,000	28,500,000
TIC Agreement [Member]
Investment in Tenancy in Common [Line Items]
Undivided interest	65.00%
Pierre Towers [Member]
Investment in Tenancy in Common [Line Items]
Management fees		425,000	418,000	402,000
Pierre Towers [Member] \| Hekemian & Co [Member]
Investment in Tenancy in Common [Line Items]
Commissions charged to operations		$ 55,000	$ 51,000	$ 40,000
S and A Commercial Associates Limited Partnership [Member]
Investment in Tenancy in Common [Line Items]
Percentage of ownership interest	65.00%
Pierre Towers Property [Member]
Investment in Tenancy in Common [Line Items]
Percentage of ownership interest	100.00%
Pierre Towers, LLC [Member]
Investment in Tenancy in Common [Line Items]
Percentage of ownership interest	100.00%