DISCONTINUED OPERATIONS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2013 Discontinued Operations [Member]	Oct. 31, 2013 Discontinued Operations [Member]	Jan. 31, 2014 Multi Family Residential [Member] Property	Jan. 31, 2014 Commercial Industrial [Member] Property	Jan. 31, 2014 Commercial Retail [Member] Property	Jan. 31, 2014 Commercial Office [Member] Property
Significant Acquisitions and Disposals [Line Items]
Number of properties sold							2	12	3	3
REVENUE
Real estate rentals	$ 58,835	$ 54,477	$ 115,961	$ 108,100	$ 1,214	$ 2,846
Tenant reimbursement	11,207	11,295	21,918	22,770	519	1,238
TOTAL REVENUE	70,885	65,772	139,515	130,870	1,733	4,084
EXPENSES
Depreciation/amortization related to real estate investments	16,828	16,367	33,012	34,423	308	845
Utilities	5,093	5,208	9,774	10,131	10	138
Maintenance	7,828	7,162	15,592	14,891	79	264
Real estate taxes	8,266	8,361	16,767	16,736	343	871
Insurance	1,345	1,413	3,081	2,714	38	87
Property management expenses	4,355	4,184	8,985	8,319	77	195
Amortization related to non-real estate investments	840	800	1,712	1,744	39	88
Impairment of real estate investments			5,565	1,860	57	1,860
TOTAL EXPENSES	52,343	46,703	104,206	95,775	951	4,348
Operating income (loss)					782	(264)
Interest expense	(14,599)	(14,799)	(29,263)	(29,395)	(105)	(392)
Other income	136	67	267	89	0	0
Income (loss) from discontinued operations before gain (loss) on sale					677	(656)
Gain on sale of discontinued operations			(1,762)	6,641	4,698	6,641
INCOME FROM DISCONTINUED OPERATIONS	$ 0	$ 5,375	$ 0	$ 5,985	$ 5,375	$ 5,985