SCHEDULE III - REAL ESTATE PROPERTIES AND ACCUMULATED DEPRECIATION (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Total real estate properties				$ 799,957
Less: Accumulated depreciation and amortization				(42,930)
Net real estate properties	$ 635,612	$ 402,896	$ 190,317	$ 757,027
Reconciliation of real estate properties
Balance at beginning of year	635,612	402,896	190,317
Additions:
Acquisitions	129,425	205,220	185,453
Capital improvements	8,442	8,273	3,371
Capitalized development expenses and carrying costs	55,623	34,857	30,947
Total additions	193,490	248,350	219,771
Deductions:
Sales	51,394	80	117
Depreciation/amortization/paydowns	20,681	15,554	7,075
Total deductions	72,075	15,634	7,192
Balance at end of year	$ 757,027	$ 635,612	$ 402,896