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, 2021	Jan. 31, 2021	Apr. 30, 2020	Jan. 31, 2020	Apr. 30, 2021	Apr. 30, 2020
Schedule of Equity Method Investments [Line Items]
Revenue		$ 12,804		$ 13,688		$ 25,558	$ 29,281
Operating expenses		9,718		10,602		18,564	24,053
Net operating income		3,086		3,086		6,994	5,228
Depreciation		2,338		2,530		4,633	5,462
Interest expense including amortization of deferred financing costs		3,060		3,676		6,192	7,911
Net income (loss)		(63)	$ 779	27,136	$ (2,021)	716	25,115
FREIT's loss on investment in TIC (65% interest)		(118)		$ (18)		(145)	$ (18)
Pierre Property [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	$ 1,242	1,883				3,774
Operating expenses	643	1,123				2,114
Net operating income	599	760				1,660
Depreciation	358	541				1,081
Interest expense including amortization of deferred financing costs	268	401				802
Net income (loss)	(27)	(182)				(223)
FREIT's loss on investment in TIC (65% interest)	$ (18)	$ (118)				$ (145)