Proforma Financial Information (Unaudited) - Summary of Pro Forma Financial Information (Details) - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Rental and Related Income	$ 118,499,000	$ 111,003,000
Community Operating Expenses	54,216,000	51,149,000
Net Loss Attributable to Common Shareholders	$ (56,890,000)	$ (8,362,000)
Net Loss Attributable to Common Shareholders per Share: Basic and Diluted	$ (1.54)	$ (0.26)