CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Total	Shares of Beneficial Interest	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	(Accumulated Deficit)	Non Controlling Interests	Shares of Beneficial Interest Shares of Beneficial Interest
Beginning balance at Sep. 30, 2015	$ 160,174		$ 161,842	$ (58)	$ (79,414)	$ 37,519	$ 40,285
Increase (Decrease) in Stockholders' Equity
Restricted stock vesting	0		(390)				390
Compensation expense—restricted stock	1,005		1,005
Contributions from non-controlling interests	33,613					33,613
Distributions to non-controlling interests	(32,825)					(32,825)
Deconsolidation of joint venture upon sale	(1,790)		0			(1,790)
Shares repurchased	(2,115)		(1,136)				(979)
Net income (loss)	45,158				31,289	13,869
Other comprehensive loss	(1,544)			(1,544)
Comprehensive income (loss)	43,614
Ending balance at Sep. 30, 2016	201,676		161,321	(1,602)	(48,125)	50,386	39,696
Increase (Decrease) in Stockholders' Equity
Restricted stock vesting	0		(375)				375
Compensation expense—restricted stock	1,219		1,219
Contributions from non-controlling interests	31,606					31,606
Distributions to non-controlling interests	(33,756)					(33,756)
Shares repurchased	(193)	$ (1)	(175)				(17)
Net income (loss)	35,628				13,600	22,028
Other comprehensive loss	3,047			2,602		445
Comprehensive income (loss)	38,675
Distributions - Common Stock	(2,522)				(2,522)
Conversion to a Maryland corporation at $.01 par value	0	134	39,920				(40,054)
Ending balance at Sep. 30, 2017	236,705	133	201,910	1,000	(37,047)	70,709
Increase (Decrease) in Stockholders' Equity
Restricted stock vesting	0	1	(1)
Compensation expense—restricted stock	988		988
Contributions from non-controlling interests	32,553					32,553
Distributions to non-controlling interests	(40,023)					(40,023)
Shares repurchased	(41)		(41)
Net income (loss)	48,001				23,773	24,228
Other comprehensive loss	2,346			1,629		717
Comprehensive income (loss)	50,347
Distributions - Common Stock	(11,653)				(11,653)
Consolidation of investment in limited partnership	12,370					12,370
Purchase of non-controlling interests	(5,172)		(3,116)			(2,056)
Shares issued through equity offering program, net	20,411	16	20,395
Ending balance at Sep. 30, 2018	$ 296,485	$ 150	$ 220,135	$ 2,629	$ (24,927)	$ 98,498	$ 0