CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Apr. 30, 2018	Apr. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (5,320)	$ 84,822	$ 127,629	$ 30,525
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	51,394	75,408	83,276	46,135
Depreciation and amortization from discontinued operations	0	0	8,526	10,477
(Gain) loss on sale of real estate, land, other investments and discontinued operations	(10,277)	(97,624)	(183,687)	(74,847)
(Gain) loss on extinguishment of debt and discontinued operations	482	2,360	6,839	3,848
(Gain) loss on litigation settlement	0	(1,349)	0	0
Share-based compensation expense	845	1,905	1,587	6
Impairment of real estate investments	1,221	0	18,065	57,028
Other, net	629	1,096	1,457	3,660
Changes in other assets and liabilities:
Other assets	(1,145)	1,076	(646)	(214)
Accounts payable and accrued expenses	2,205	1,930	(7,851)	2,434
Net cash provided (used) by operating activities	40,034	69,624	55,195	79,052
CASH FLOWS FROM INVESTING ACTIVITIES
Issuance of loans receivable	(918)	(6,279)	(15,480)	0
Purchase of marketable securities	0	(6,942)	0	0
Proceeds from sale of discontinued operations	0	0	426,131	237,135
Proceeds from sale of real estate and other investments	62,695	199,282	64,639	47,354
Payments for acquisitions of real estate assets	(977)	(158,466)	(374,081)	0
Payments for improvements of real estate assets	0	0	(2,655)	(18,274)
Payments for improvements of real estate assets	(11,518)	(20,954)	(17,980)	(41,083)
Other investing activities	1,889	366	(462)	(972)
Net cash provided (used) by investing activities	51,171	7,007	80,112	224,160
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from mortgages payable	0	59,900	0	84,150
Principal payments on mortgages payable	(67,016)	(177,743)	(205,159)	(298,984)
Proceeds from revolving lines of credit	53,017	245,397	370,350	246,000
Principal payments on revolving lines of credit	(119,517)	(252,818)	(303,400)	(206,450)
Proceeds from notes payable and other debt	74,352	124,878	72,714	19,341
Principal payments on notes payable and other debt	0	0	(21,689)	(49,080)
Payoff of financing liability	0	0	(7,900)	0
Proceeds from sale of common shares, net of issuance costs	0	22,019	0	0
Additions to notes receivable from noncontrolling partner – consolidated real estate entities	0	0	0	(9,211)
Proceeds from noncontrolling partner – consolidated real estate entities	0	0	0	9,749
Payments for acquisition of noncontrolling interests – consolidated real estate entities	0	(1,260)	0	(4,938)
Proceeds from sale of preferred shares	0	0	99,467	0
Repurchase of common shares	(2,172)	(18,023)	(9,935)	(4,501)
Repurchase of preferred shares	0	0	(115,017)	(28,752)
Repurchase of partnership units	(498)	(8,147)	(8,775)	(966)
Distributions paid to common shareholders	(16,724)	(32,891)	(33,689)	(55,907)
Distributions paid to preferred shareholders	(5,116)	(6,821)	(8,763)	(10,744)
Distributions paid to noncontrolling interests – Unitholders of the Operating Partnership	(1,959)	(3,630)	(4,096)	(7,453)
Distributions paid to noncontrolling interests – consolidated real estate entities	(2,432)	(220)	(99)	(174)
Distributions paid to preferred unitholders	0	(377)	0	0
Other financing activities	0	(34)	0	0
Net cash provided (used) by financing activities	(88,065)	(49,770)	(175,991)	(317,920)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	3,140	26,861	(40,684)	(14,708)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	16,116	19,256	56,800	71,508
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF YEAR	19,256	46,117	16,116	56,800
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	(329)	1,273	(3,415)	(1,851)
Distributions declared but not paid	0	9,210	0	0
Conversion to equity of notes receivable from noncontrolling interests - consolidated real estate entities	670	0	0	9,846
Construction debt reclassified to mortgages payable	0	0	23,300	10,549
Increase in mortgage notes receivable	0	0	10,329	0
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest, net of amounts capitalized of $0, $0, $0 and $431, respectively	24,135	28,679	35,758	34,432
Series D Preferred Units
SUPPLEMENTARY SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Property acquired through issuance of Series D preferred units	$ 0	$ 16,560	$ 0	$ 0