DISCONTINUED OPERATIONS (Details) (USD $)	3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Jan. 31, 2014	Jul. 31, 2013	Jan. 31, 2013	Jul. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Jan. 31, 2014	Jan. 31, 2013	Apr. 30, 2013
DISCONTINUED OPERATIONS [Abstract]
Number of multifamily residential properties sold						2	2	1	3
Number Of Condominium Units Sold				2		2			4
Number of retail properties sold		1		1			2
Number of office properties sold					3
Number of industrial sold		4			5		3
Number of industrial held for sale							0	4
REVENUE
Real estate rentals	$ 56,156,000		$ 51,973,000				$ 164,256,000	$ 152,042,000
Tenant reimbursement	11,473,000		11,107,000				34,243,000	31,832,000
TOTAL REVENUE	67,629,000		63,080,000				198,499,000	183,874,000
EXPENSES
Depreciation/amortization related to real estate investments	16,733,000		14,754,000				51,156,000	44,273,000
Utilities	5,042,000		4,655,000				15,173,000	13,568,000
Maintenance	7,828,000		7,454,000				22,719,000	20,895,000
Real estate taxes	7,679,000		8,190,000				24,415,000	23,782,000
Insurance	1,190,000		1,025,000				3,904,000	2,798,000
Property management expenses	4,064,000		3,824,000				12,383,000	11,293,000
Other expenses	273,000		464,000				1,630,000	1,496,000
Amortization related to non-real estate investments	756,000		739,000				2,500,000	2,232,000
Impairment of real estate investments							6,658,000	0
TOTAL EXPENSES	51,149,000		43,550,000				146,924,000	127,505,000
Interest expense	(15,130,000)		(15,197,000)				(44,525,000)	(46,554,000)
Other income	167,000		185,000				256,000	424,000
Gain (loss) on sale of discontinued operations							6,999,000	3,452,000
INCOME FROM DISCONTINUED OPERATIONS	465,000		1,565,000				6,450,000	5,481,000
Discontinued Operations [Member]
REVENUE
Real estate rentals	327,000		2,361,000				3,173,000	7,762,000
Tenant reimbursement	64,000		817,000				1,302,000	2,302,000
TOTAL REVENUE	391,000		3,178,000				4,475,000	10,064,000
EXPENSES
Depreciation/amortization related to real estate investments	75,000		752,000				920,000	2,443,000
Utilities	26,000		108,000				164,000	315,000
Maintenance	35,000		243,000				299,000	782,000
Real estate taxes	80,000		543,000				951,000	1,654,000
Insurance	10,000		46,000				97,000	158,000
Property management expenses	27,000		106,000				222,000	412,000
Other expenses	0		0				0	16,000
Amortization related to non-real estate investments	2,000		55,000				90,000	194,000
Impairment of real estate investments	0		0				1,860,000	0
TOTAL EXPENSES	255,000		1,853,000				4,603,000	5,974,000
Operating (loss) income	136,000		1,325,000				(128,000)	4,090,000
Interest expense	(29,000)		(534,000)				(421,000)	(2,063,000)
Other income	0		2,000				0	2,000
(Loss) income from discontinued operations before gain (loss) on sale	107,000		793,000				(549,000)	2,029,000
Gain (loss) on sale of discontinued operations	358,000		772,000				6,999,000	3,452,000
INCOME FROM DISCONTINUED OPERATIONS	$ 465,000		$ 1,565,000				$ 6,450,000	$ 5,481,000