Real Estate Investments - Schedule of Properties Acquired During Period Accounted for Asset Acquisitions (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2019 USD ($)
Land [Member]
Purchase price allocation of properties acquired	$ 11,778
Buildings [Member]
Purchase price allocation of properties acquired	99,741
In-Place Leases [Member]
Purchase price allocation of properties acquired	$ 1,886