CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 14,822	$ 17,582
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	53,583	55,996
Loss (gain) on sale of real estate, land, other investments and discontinued operations	811	(6,999)
Gain on involuntary conversion	0	(2,480)
Share-based compensation expense	1,935	0
Impairment of real estate investments	6,105	6,658
Bad debt expense	840	346
Changes in other assets and liabilities:
Increase in receivable arising from straight-lining of rents	(244)	(2,179)
Decrease (increase) in accounts receivable	2,217	(3,483)
Decrease in prepaid and other assets	(1,140)	(3,127)
Decrease (increase) in tax, insurance and other escrow	(548)	(1,779)
Increase in deferred charges and leasing costs	(2,716)	(3,506)
Decrease in accounts payable, accrued expenses and other liabilities	5,109	3,075
Net cash provided by operating activities	80,774	60,104
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from real estate deposits	575	926
Payments for real estate deposits	(7,924)	(4,232)
Decrease in lender holdbacks for improvements	11,063	2,186
Increase in lender holdbacks for improvements	(913)	(12,388)
Proceeds from sale of discontinued operations	0	78,879
Proceeds from sale of real estate and other investments	26,758	165
Insurance proceeds received	2,537	2,452
Payments for acquisitions of real estate assets	(24,404)	(33,662)
Payments for development and re-development of real estate assets	(143,256)	(97,288)
Payments for improvements of real estate assets	(24,681)	(25,815)
Net cash used by investing activities	(160,245)	(88,777)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	78,875	40,733
Principal payments on mortgages payable	(83,198)	(81,432)
Proceeds from revolving lines of credit and other debt	114,051	52,284
Principal payments on revolving lines of credit and other debt	(17,000)	(17,443)
Proceeds from financing liability	0	7,900
Proceeds from sale of common shares under distribution reinvestment and share purchase program	38,819	33,160
Proceeds from noncontrolling partner - consolidated real estate entities	1,916	416
Distributions paid to common shareholders, net of reinvestment of $11,550 and $10,511, respectively	(33,672)	(30,174)
Distributions paid to preferred shareholders	(8,636)	(8,636)
Distributions paid to noncontrolling interests - Unitholders of the Operating Partnership, net reinvestment of $506 and $482, respectively	(6,247)	(8,026)
Distributions paid to noncontrolling interests - consolidated real estate entities	(556)	(748)
Net cash (used) provided by financing activities	84,352	(11,966)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	4,881	(40,639)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	47,267	94,133
CASH AND CASH EQUIVALENTS AT END OF PERIOD	52,148	53,494
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING
Distribution reinvestment plan	11,550	10,511
Operating partnership distribution reinvestment plan	506	482
Operating partnership units converted to shares	38,512	1,131
Shares issued under the Incentive Award Plan	860	112
Shares issued under the Incentive Award Plan	860	112
Real estate assets acquired through the issuance of operating partnership units	100	3,480
Real estate assets acquired through assumption of indebtedness and accrued costs	12,169	0
Increase (decrease) to accounts payable included within real estate investments	6,384	(325)
Real estate assets contributed by noncontrolling interest - consolidated real estate entities	6,624	2,900
Involuntary conversion of assets due to flood and fire damage	0	7,052
Forfeiture of note payable in conjunction with sale of property	0	600
Cash paid during the year for:
Cash paid for interest, net of amounts capitalized of $3,628 and $2,139, respectively	$ 39,073	$ 40,845