CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 13,513	$ 12,006
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	37,988	33,730
Gain on sale of real estate, land, other investments and discontinued operations	(6,641)	(2,680)
Gain on involuntary conversion	(966)	(2,263)
Impairment of real estate investments	1,860	0
Bad debt expense	214	694
Changes in other assets and liabilities:
Increase in receivable arising from straight-lining of rents	(1,352)	(1,743)
(Increase) decrease in accounts receivable	(1,095)	2,857
(Increase) decrease in prepaid and other assets	(2,534)	1,598
(Increase) decrease in tax, insurance and other escrow	(343)	161
Increase in deferred charges and leasing costs	(1,834)	(2,290)
Decrease in accounts payable, accrued expenses, and other liabilities	(2,629)	(7,096)
Net cash provided by operating activities	36,181	34,974
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from real estate deposits	676	1,093
Payments for real estate deposits	(710)	(885)
Decrease in lender holdbacks for improvements	1,610	1,018
Increase in lender holdbacks for improvements	(562)	(1,687)
Proceeds from sale of discontinued operations	67,478	3,267
Insurance proceeds received	985	3,432
Payments for acquisitions of real estate assets	(32,369)	(38,074)
Payments for development and re-development of real estate assets	(63,170)	(23,900)
Payments for improvements of real estate assets	(15,580)	(19,846)
Net cash used by investing activities	(41,642)	(75,582)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	32,083	57,030
Principal payments on mortgages payable	(60,136)	(68,384)
Proceeds from revolving line of credit and other debt	22,785	24,400
Principal payments on revolving line of credit and other debt	(17,143)	(34,500)
Proceeds from financing liability	7,900	0
Proceeds from sale of common shares, net of issue costs	0	2,448
Proceeds from sale of common shares under distribution reinvestment and share purchase program	25,586	17,979
Proceeds from underwritten Public Offering of Preferred Shares - Series B, net of offering costs	0	111,357
Repurchase of fractional shares and partnership units	0	(15)
Proceeds from noncontrolling partner - consolidated real estate entities	416	0
Distributions paid to common shareholders, net of reinvestment of $7,102 and $6,129, respectively	(19,781)	(17,610)
Distributions paid to preferred shareholders	(5,757)	(2,710)
Distributions paid to noncontrolling interests - Unitholders of the Operating Partnership, net of reinvestment of $333 and $313, respectively	(5,338)	(5,118)
Distributions paid to noncontrolling interests - consolidated real estate entities	(560)	0
Net cash (used) provided by financing activities	(19,945)	84,877
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(25,406)	44,269
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	94,133	39,989
CASH AND CASH EQUIVALENTS AT END OF PERIOD	68,727	84,258
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING
Distribution reinvestment plan	7,102	6,129
Operating partnership distribution reinvestment plan	333	313
Operating partnership units converted to shares	946	579
Shares issued under the Incentive Award Plan	112	398
Real estate assets acquired through the issuance of operating partnership units	3,480	8,116
Real estate assets acquired through assumption of indebtedness and accrued costs	0	12,500
Mortgages included in real estate dispositions	0	4,638
Adjustments to accounts payable included within real estate investments	9,606	(1,974)
Noncontrolling partnership interest	2,900	1,136
Involuntary conversion of assets due to flood and fire damage	0	107
Cash paid during the year for:
Cash paid for interest, net of amounts capitalized of $1,360 and $281, respectively	$ 27,470	$ 31,861