Investment in tenancy-in-common (Schedule of Income Statement of Pierre Property) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Apr. 30, 2022	Jan. 31, 2022	Apr. 30, 2021	Jan. 31, 2021	Apr. 30, 2022	Apr. 30, 2021
Schedule of Equity Method Investments [Line Items]
Revenue	$ 6,615		$ 12,804		$ 17,264	$ 25,558
Operating expenses	4,863		9,718		13,336	18,564
Depreciation	714		2,338		2,534	4,633
Operating income	1,752		3,086		3,928	6,994
Interest expense including amortization of deferred financing costs	1,527		3,060		4,455	6,192
Net loss	(1,001)	$ 69,153	(63)	$ 779	68,152	716
FREIT's loss on investment in TIC (65% interest)	(32)		(118)		(156)	(145)
Pierre Property [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	1,969		1,883		3,923	3,774
Operating expenses	1,074		1,123		2,275	2,114
Depreciation	545		541		1,087	1,081
Operating income	350		219		561	579
Interest expense including amortization of deferred financing costs	400		401		801	802
Net loss	(50)		(182)		(240)	(223)
FREIT's loss on investment in TIC (65% interest)	$ (32)		$ (118)		$ (156)	$ (145)