CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (5,611)	$ 13,139	$ (1,895)	$ (140)
Other comprehensive income:
Unrealized gain (loss) from derivative instrument	1,333	0	1,542	0
(Gain) loss on derivative instrument reclassified into earnings	90	0	119	0
Total comprehensive income (loss)	(4,188)	13,139	(234)	(140)
Net comprehensive (income) loss attributable to noncontrolling interests – Operating Partnership	585	(733)	428	871
Net comprehensive (income) loss attributable to noncontrolling interests – consolidated real estate entities	331	455	(334)	826
Comprehensive income (loss) attributable to controlling interests	$ (3,272)	$ 12,861	$ (140)	$ 1,557