ORGANIZATION, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Properties Held for Sale (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019	Oct. 31, 2019
Property Held for Sale [Abstract]
Loss on sale of properties			$ (328,000)	$ 0
Revenues	$ 31,280,000	$ 34,105,000	65,628,000	68,372,000
Depreciation and amortization	(7,148,000)	(6,985,000)	(14,283,000)	(13,925,000)
Net Income	7,240,000	9,960,000	16,761,000	19,978,000
Amortization of remaining over-market value for terminated lease	(173,000)	(156,000)	(350,000)	(291,000)
Disposal Group, Not Discontinued Operations [Member] | Bernardsville, NJ [Member]
Property Held for Sale [Abstract]
Proceeds from sale of property held for sale			2,700,000
Loss on sale of properties			86,000		$ 434,000
Disposal Group, Not Discontinued Operations [Member] | Retail Property Carmel, NY [Member]
Property Held for Sale [Abstract]
Proceeds from sale of property held for sale			1,300,000
Loss on sale of properties			242,000
Disposal Group, Not Discontinued Operations [Member] | Bernardsville, NJ and Carmel, NY Member [Member]
Property Held for Sale [Abstract]
Revenues	0	87,000	16,000	162,000
Property operating expense	(4,000)	(62,000)	(27,000)	(108,000)
Depreciation and amortization	0	(34,000)	(9,000)	(68,000)
Net Income	$ (4,000)	$ (9,000)	$ (20,000)	$ (14,000)