Investment in tenancy-in-common (Schedule of Income Statement of Pierre Property) (Details) - USD ($) $ in Thousands	3 Months Ended						5 Months Ended	9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Jul. 31, 2020	Jul. 31, 2020	Jul. 31, 2019
Schedule of Equity Method Investments [Line Items]
Revenues	$ 12,149			$ 15,255				$ 41,430	$ 44,969
Operating expenses	9,308			10,585				33,361	30,716
Net operating income	2,841			4,670				8,069	14,253
Depreciation	2,425			2,806				7,887	8,413
Interest expense including amortization of deferred financing costs	3,121			4,496				11,032	13,675
Net loss	(320)	$ 27,136	$ (2,021)	265	$ 830	$ 435		24,795	1,530
FREIT's loss on investment in TIC (65% interest)	(78)							$ (96)
Pierre Property [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	1,864						$ 3,106
Operating expenses	1,046						1,689
Net operating income	818						1,417
Depreciation	537						895
Interest expense including amortization of deferred financing costs	401						669
Net loss	(120)						(147)
FREIT's loss on investment in TIC (65% interest)	$ (78)						$ (96)