Investments in Real Estate - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Asset Acquisition
Land	$ 33,408	$ 1,895
Building and improvements	174,708	14,458
In place leases	18,532	1,237
Below market leases	(3,386)	(201)
Above market leases	2,046	0
Net real estate assets acquired	225,308	17,389
Other, net	4,543	447
Aggregate purchase price	$ 229,851	$ 17,836