Investment in tenancy-in-common (Schedule of Income Statement of Pierre Property) (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended				6 Months Ended
	Apr. 30, 2020	Apr. 30, 2020	Jan. 31, 2020	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2020	Apr. 30, 2019
Schedule of Equity Method Investments [Line Items]
Revenues		$ 13,688		$ 14,786		$ 29,281	$ 29,714
Operating expenses		10,602		10,373		24,053	20,131
Net operating income		3,086		4,413		5,228	9,583
Depreciation		2,530		2,783		5,462	5,607
Interest expense including amortization of deferred financing costs		3,676		4,527		7,911	9,179
Net loss		27,136	$ (2,021)	830	$ 435	25,115	1,265
FREIT's loss on investment in TIC (65% interest)		$ (18)				$ (18)
Pierre Property [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	$ 1,242
Operating expenses	643
Net operating income	599
Depreciation	358
Interest expense including amortization of deferred financing costs	268
Net loss	(27)
FREIT's loss on investment in TIC (65% interest)	$ (18)