Investment in Unconsolidated Ventures (Details) $ in Thousands	3 Months Ended
Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of Units \| property	35
Equity in loss of unconsolidated joint ventures	$ 125	$ 25
Joint venture, forty six percent ownership
Schedule of Equity Method Investments [Line Items]
Number of real estate properties, to be constructed \| property	339
Other investments
Schedule of Equity Method Investments [Line Items]
Carrying Value of Investment	$ 123
Unconsolidated joint ventures
Schedule of Equity Method Investments [Line Items]
Number of Units \| property	1,026
Carrying Value of Investment	$ 19,758
Mortgage Balance	$ 103,032
Columbia, SC \| Joint venture, thirty two percent ownership
Schedule of Equity Method Investments [Line Items]
Number of Units \| property	374
Carrying Value of Investment	$ 4,619
Mortgage Balance	$ 40,219
Percent Ownership	32.00%
Columbia, SC (Location 2) \| Joint venture, forty six percent ownership
Schedule of Equity Method Investments [Line Items]
Number of Units \| property	339
Carrying Value of Investment	$ 8,425
Mortgage Balance	$ 37,463
Percent Ownership	46.00%
Forney, TX \| Joint venture, fifty percent ownership
Schedule of Equity Method Investments [Line Items]
Number of Units \| property	313
Carrying Value of Investment	$ 6,591
Mortgage Balance	$ 25,350
Percent Ownership	50.00%
Secured Debt \| Joint venture, forty six percent ownership
Schedule of Equity Method Investments [Line Items]
Construction financing	$ 47,426
Interest rate	4.95%

Number Of Real Estate Properties, To Be Constructed

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This element represents the noncurrent portion of a long-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount of liabilities reported by an equity method investment of the entity.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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