CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2014		Apr. 30, 2013		Apr. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (16,940)		$ 29,972		$ 9,706
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	73,723		67,559		61,954
Gain on sale of real estate, land, other investments and discontinued operations	(6,948)		(6,885)		(349)
Gain on involuntary conversion	(2,480)		(5,084)		(274)
Impairment of real estate investments	44,426		305		428
Bad debt expense	434		665		298
Changes in other assets and liabilities:
Increase in receivable arising from straight-lining of rents	(2,293)		(2,733)		(4,831)
Decrease in accounts receivable	1,880		689		1,542
Increase in prepaid and other assets	(555)		(693)		(1,361)
Increase in tax, insurance and other escrow	(1,046)		(325)		(353)
Increase in deferred charges and leasing costs	(4,708)		(5,946)		(6,145)
Increase in accounts payable, accrued expenses and other liabilities	7,021		194		4,522
Net cash provided by operating activities	92,514		77,718		65,137
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from real estate deposits	991		2,037		2,254
Payments for real estate deposits	(940)		(1,970)		(2,188)
Principal proceeds on mortgage loans receivable	0		0		159
Decrease in other investments	314		0		0
Decrease in lender holdbacks for improvements	3,780		1,891		5,681
Increase in lender holdbacks for improvements	(11,045)		(2,466)		(1,730)
Proceeds from sale of discontinued operations	78,879		20,009		3,142
Proceeds from sale of real estate and other investments	682		95		430
Insurance proceeds received	2,491		6,211		5,758
Payments for acquisitions of real estate assets	(38,283)		(76,020)		(61,661)
Payments for development and re-development of real estate assets	(123,744)		(57,649)		(37,777)
Payments for improvements of real estate assets	(34,959)		(26,280)		(42,333)
Net cash (used) provided by investing activities	(121,834)		(134,142)		(128,265)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	50,333		85,230		117,595
Principal payments on mortgages payable	(101,867)		(104,976)		(77,089)
Proceeds from revolving line of credit and other debt	67,699		44,262		31,925
Principal payments on revolving line of credit and other debt	(17,443)		(55,411)		(10,060)
Proceeds from financing liability	7,900		0		0
Proceeds from sale of common shares, net of issue costs	0		55,433		24,413
Proceeds from sale of common shares under distribution reinvestment and share purchase program	41,194		30,707		23,511
Proceeds from underwritten Public Offering of Preferred Shares - Series B, net of offering costs	0		111,357		0
Proceeds from noncontrolling partner - consolidated real estate entities	994		0		2,854
Payments for acquisition of noncontrolling interests - consolidated real estate entities	(2,505)		0		(1,289)
Distributions paid to common shareholders, net of reinvestment of $13,965, $11,802 and $10,177, respectively	(40,764)		(36,463)		(36,477)
Distributions paid to preferred shareholders	(11,514)		(8,467)		(2,372)
Distributions paid to noncontrolling interests - Unitholders of the Operating Partnership, net reinvestment of $634, $614 and $657, respectively	(10,649)		(10,371)		(10,445)
Distributions paid to noncontrolling interests - consolidated real estate entities	(924)		(733)		(613)
Distributions paid to redeemable noncontrolling interests - consolidated real estate entities	0		0		(27)
Net cash provided (used) by financing activities	(17,546)		110,568		61,926
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(46,866)		54,144		(1,202)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	94,133	[1]	39,989		41,191
CASH AND CASH EQUIVALENTS AT END OF YEAR	47,267		94,133	[1]	39,989
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING
Distribution reinvestment plan	13,965		11,802		10,177
Operating partnership distribution reinvestment plan	634		614		657
Operating partnership units converted to shares	4,353		1,551		3,454
Shares issued under the Incentive Award Plan	112		398		443
Real estate assets acquired through the issuance of operating partnership units	3,480		12,632		8,055
Real estate assets acquired through assumption of indebtedness and accrued costs	0		12,500		7,190
Mortgages included in real estate dispositions	0		5,887		0
Increase (decrease) to accounts payable included within real estate investments	1,767		2,502		(5,445)
Real estate assets contributed by noncontrolling interests - consolidated real estate entities	2,901		12,415		2,227
Fair value adjustments to redeemable noncontrolling interests	0		0		35
Involuntary conversion of assets due to flood and fire damage	7,052		107		2,783
Construction debt reclassified to mortgages payable	0		13,650		7,190
Forfeiture of note payable in conjunction with sale of property	600		0		0
Cash paid during the year for:
Cash paid for interest, net of amounts capitalized of $2,855,$742 and $571, respectively	$ 54,071		$ 60,357		$ 63,653

[1] (as revised)