Basis of Preparation (Policies)	3 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Preparation	The accompanying interim unaudited consolidated financial statements as of December 31, 2018, and for the three months ended December 31, 2018 and 2017, reflect all normal recurring adjustments which, in the opinion of management, are necessary for a fair presentation of the results for such interim periods. The results of operations for the three months ended December 31, 2018 and 2017, are not necessarily indicative of the results for the full year. The consolidated balance sheet as of September 30, 2018, has been derived from the audited financial statements at that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States ("GAAP") for complete financial statements.
Consolidated Financial Statements and Variable Interest Entities	The consolidated financial statements include the accounts and operations of the Company, its wholly owned subsidiaries, and its majority owned or controlled real estate entities and its interests in variable interest entities ("VIEs") in which the Company is determined to be the primary beneficiary. Material intercompany balances and transactions have been eliminated. The Company’s consolidated joint ventures that own multi-family properties were determined to be VIEs because the voting rights of some equity investors in the applicable joint venture entity are not proportional to their obligations to absorb the expected losses of the entity and their right to receive the expected residual returns. It was determined that the Company is the primary beneficiary of these joint ventures because it has a controlling interest in that it has the power to direct the activities of the VIE that most significantly impact the entity's economic performance and it has the obligation to absorb losses of the entity and the right to receive benefits that could potentially be significant to the VIE. The joint ventures that own properties in Ocoee, FL, Lawrenceville, GA, Dallas, TX, Farmers Branch, TX and Grand Prairie, TX were determined not to be a VIEs but are consolidated because the Company has controlling rights in such entities. With respect to its unconsolidated joint ventures, as (i) the Company is generally the managing member but does not exercise substantial operating control over these entities or the Company is not the managing member and (ii) such entities are not VIEs, the Company has determined that such joint ventures should be accounted for under the equity method of accounting for financial statement purposes. The distributions to each joint venture partner are determined pursuant to the applicable operating agreement and may not be pro-rata to the percentage equity interest each partner has in the applicable venture.
Use of Estimates	The preparation of the financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements. Actual results could differ from those estimates. Substantially all of the Company's assets are comprised of multi- family real estate assets generally leased to tenants on a one-year basis. Therefore, the Company aggregates real estate assets for reporting purposes and operates in one reportable segment.
Financial Instruments Carried at Fair Value	Financial Instruments Carried at Fair Value The Company’s fair value measurements are based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, there is a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. Level 1 assets/liabilities are valued based on quoted prices for identical instruments in active markets, Level 2 assets/liabilities are valued based on quoted prices in active markets for similar instruments, on quoted prices in less active or inactive markets, or on other “observable” market inputs, and Level 3 assets/liabilities are valued based significantly on “unobservable” market inputs.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), which prescribes a single, common revenue standard that supersedes nearly all existing revenue recognition guidance under U.S. GAAP, including most industry-specific requirements. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 outlines a five step model to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP. The standard is effective for annual periods beginning after December 15, 2017, and interim periods therein. The Company's revenues are primarily derived from rental income, which is scoped out from this standard and is currently accounted for in accordance with ASC Topic 840, Leases. The Company adopted this standard effective October 1, 2018, using the modified retrospective approach, applying the provisions to open contracts as of the date of adoption. Certain revenues, such as tenant reimbursements, tenant fees, and other property income, are subject to the new guidance. The adoption of the new revenue recognition standard did not have a material impact on the consolidated financial statements and no cumulative effect adjustment was recorded upon adoption as there was no change in the amount or timing of revenue recognized. In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 supersedes the current accounting for leases and while retaining two distinct types of leases, finance and operating, and requires lessees to recognize most leases on their balance sheets and makes targeted changes to lessor accounting. Further, in July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements. This amendment provides a new practical expedient that allows lessors, by class of underlying asset, to avoid separating lease and associated non-lease components within a contract if certain criteria are met: (i) the timing and pattern of transfer for the non-lease component and the associated lease component are the same and (ii) the stand-alone lease component would be classified as an operating lease if accounted for separately. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 and early adoption is permitted. The Company will adopt this standard effective January 1, 2019, and its adoption is not expected to have a material effect on the consolidated financial statements. As a lessor, the Company expects that the adoption of ASU 2016-02 (as amended by subsequent ASUs) will not change the timing of revenue recognition of the Company’s rental revenues. As a lessee, the Company is party to certain equipment, ground, and office leases with future payment obligations for which the Company expects to record right-of-use assets and lease liabilities at the present value of the remaining minimum rental payments upon adoption of this standard. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which provides specific guidance on eight cash flow classification issues and how to reduce diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this standard effective October 1, 2018, using the “cumulative earnings approach” whereby distributions received from equity method investments are classified as cash flows from operations to the extent of equity earnings and then as cash flows from investing activities thereafter. The adoption of this guidance did not have a material effect on the consolidated financial statements. In November 2016, the FASB issued ASU Update No. 2016-018, Statement of Cash Flows (Topic 230): Restricted Cash. The new standard requires that the statement of cash flows explain the change during the period in the combined total of cash, cash equivalents, and amounts generally described as restricted cash equivalents. Entities will also be required to reconcile such total to amounts on the balance sheet and disclose relevant information about the nature of the restrictions on the basis of their individual facts and circumstances. The Company adopted this standard effective October 1, 2018 using the retrospective approach. The adoption of this update did not have a material effect on the consolidated financial statements. In February 2017, the FASB issued ASU 2017-05, Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets, which amends the guidance on nonfinancial assets in ASC 610-20. The amendments clarify that (i) a financial asset is within the scope of ASC 610-20 if it meets the definition of an in substance nonfinancial asset and may include nonfinancial assets transferred within a legal entity to a counter-party, (ii) an entity should identify each distinct nonfinancial asset or in substance nonfinancial asset promised to a counter-party and de-recognize each asset when a counter-party obtains control of it, and (iii) an entity should allocate consideration to each distinct asset by applying the guidance in ASC 606 on allocating the transaction price to performance obligations. Further, ASU 2017-05 provides guidance on accounting for partial sales of nonfinancial assets. The amendments are effective at the same time as the amendments in ASU 2014-09. The Company adopted this standard effective October 1, 2018. The adoption of this guidance did not have a material effect on the consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities. The update better aligns a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company adopted this standard effective January 1, 2019, and does not expect the adoption will have a material effect on the consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. This update provides specific guidance for transactions for acquiring goods and services from nonemployees and specifies that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (i) financing to the issuer or (ii) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under ASC Topic 606, Revenue from Contracts with Customers. This guidance is effective for fiscal years beginning after December 15, 2019, and interim periods beginning after December 15, 2020. Early adoption is permitted but not earlier than the adoption of ASC Topic 606. The Company does not believe that this guidance will have a material effect on its consolidated financial statements as it has not historically issued share-based payments in exchange for goods or services to be consumed within its operations. In August 2018, the FASB issued ASU 2018-13, Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement, which removes, modifies, and adds certain disclosure requirements related to fair value measurements in ASC Topic 820. This guidance is effective for public companies in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements. In October 2018, the FASB issued ASU 2018-16, (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) as a Benchmark Interest Rate for Hedging Purposes. The amendments in this update permit the OIS rate based on SOFR as an eligible benchmark interest rate. The amendments in this update are effective for fiscal years beginning after December 15, 2018. The Company adopted this guidance on January 1, 2019. The Company does not believe this guidance will have a material effect on its consolidated financial statements. In October 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810: Targeted Improvements to Related Party Guidance for Variable Interest Entities) that expands the application of a specific private company accounting alternative related to VIEs and changes the guidance for determining whether a decision-making fee is a variable interest. It allows private companies the election not to apply the variable interest entity guidance to qualifying common control leasing arrangements. The amendment broadens the scope of the private company alternative to include all common control arrangements that meet specific criteria (not just leasing arrangements). ASU 2018-17 also eliminates the requirement that entities consider indirect interests held through related parties under common control in their entirety when assessing whether a decision-making fee is a variable interest. Instead, the reporting entity will consider such indirect interests on a proportionate basis. The ASU is effective for entities other than private entities for fiscal years beginning after December 15, 2019 with early adoption permitted. The company is currently evaluation the impact this guidance will have on its consolidated financial statements.

Basis of Preparation (Policies)

3 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The accompanying interim unaudited consolidated financial statements as of December 31, 2018, and for the three months ended December 31, 2018 and 2017, reflect all normal recurring adjustments which, in the opinion of management, are necessary for a fair presentation of the results for such interim periods. The results of operations for the three months ended December 31, 2018 and 2017, are not necessarily indicative of the results for the full year. The consolidated balance sheet as of September 30, 2018, has been derived from the audited financial statements at that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States ("GAAP") for complete financial statements.

Consolidated Financial Statements and Variable Interest Entities

The consolidated financial statements include the accounts and operations of the Company, its wholly owned subsidiaries, and its majority owned or controlled real estate entities and its interests in variable interest entities ("VIEs") in which the Company is determined to be the primary beneficiary. Material intercompany balances and transactions have been eliminated.

The Company’s consolidated joint ventures that own multi-family properties were determined to be VIEs because the voting rights of some equity investors in the applicable joint venture entity are not proportional to their obligations to absorb the expected losses of the entity and their right to receive the expected residual returns. It was determined that the Company is the primary beneficiary of these joint ventures because it has a controlling interest in that it has the power to direct the activities of the VIE that most significantly impact the entity's economic performance and it has the obligation to absorb losses of the entity and the right to receive benefits that could potentially be significant to the VIE.

The joint ventures that own properties in Ocoee, FL, Lawrenceville, GA, Dallas, TX, Farmers Branch, TX and Grand Prairie, TX were determined not to be a VIEs but are consolidated because the Company has controlling rights in such entities.

With respect to its unconsolidated joint ventures, as (i) the Company is generally the managing member but does not exercise substantial operating control over these entities or the Company is not the managing member and (ii) such entities are not VIEs, the Company has determined that such joint ventures should be accounted for under the equity method of accounting for financial statement purposes.

The distributions to each joint venture partner are determined pursuant to the applicable operating agreement and may not be pro-rata to the percentage equity interest each partner has in the applicable venture.

Use of Estimates

The preparation of the financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements. Actual results could differ from those estimates. Substantially all of the Company's assets are comprised of multi- family real estate assets generally leased to tenants on a one-year basis. Therefore, the Company aggregates real estate assets for reporting purposes and operates in one reportable segment.

Financial Instruments Carried at Fair Value

Financial Instruments Carried at Fair Value The Company’s fair value measurements are based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, there is a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. Level 1 assets/liabilities are valued based on quoted prices for identical instruments in active markets, Level 2 assets/liabilities are valued based on quoted prices in active markets for similar instruments, on quoted prices in less active or inactive markets, or on other “observable” market inputs, and Level 3 assets/liabilities are valued based significantly on “unobservable” market inputs.

New Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), which prescribes a single, common revenue standard that supersedes nearly all existing revenue recognition guidance under U.S. GAAP, including most industry-specific requirements. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 outlines a five step model to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP. The standard is effective for annual periods beginning after December 15, 2017, and interim periods therein. The Company's revenues are primarily derived from rental income, which is scoped out from this standard and is currently accounted for in accordance with ASC Topic 840, Leases. The Company adopted this standard effective October 1, 2018, using the modified retrospective approach, applying the provisions to open contracts as of the date of adoption. Certain revenues, such as tenant reimbursements, tenant fees, and other property income, are subject to the new guidance. The adoption of the new revenue recognition standard did not have a material impact on the consolidated financial statements and no cumulative effect adjustment was recorded upon adoption as there was no change in the amount or timing of revenue recognized.

In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 supersedes the current accounting for leases and while retaining two distinct types of leases, finance and operating, and requires lessees to recognize most leases on their balance sheets and makes targeted changes to lessor accounting. Further, in July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements. This amendment provides a new practical expedient that allows lessors, by class of

underlying asset, to avoid separating lease and associated non-lease components within a contract if certain criteria are met: (i) the timing and pattern of transfer for the non-lease component and the associated lease component are the same and (ii) the stand-alone lease component would be classified as an operating lease if accounted for separately. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 and early adoption is permitted. The Company will adopt this standard effective January 1, 2019, and its adoption is not expected to have a material effect on the consolidated financial statements. As a lessor, the Company expects that the adoption of ASU 2016-02 (as amended by subsequent ASUs) will not change the timing of revenue recognition of the Company’s rental revenues. As a lessee, the Company is party to certain equipment, ground, and office leases with future payment obligations for which the Company expects to record right-of-use assets and lease liabilities at the present value of the remaining minimum rental payments upon adoption of this standard.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which provides specific guidance on eight cash flow classification issues and how to reduce diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this standard effective October 1, 2018, using the “cumulative earnings approach” whereby distributions received from equity method investments are classified as cash flows from operations to the extent of equity earnings and then as cash flows from investing activities thereafter. The adoption of this guidance did not have a material effect on the consolidated financial statements.

In November 2016, the FASB issued ASU Update No. 2016-018, Statement of Cash Flows (Topic 230): Restricted

Cash. The new standard requires that the statement of cash flows explain the change during the period in the combined total of

cash, cash equivalents, and amounts generally described as restricted cash equivalents. Entities will also be required to reconcile such total to amounts on the balance sheet and disclose relevant information about the nature of the restrictions on the basis of their individual facts and circumstances. The Company adopted this standard effective October 1, 2018 using the retrospective approach. The adoption of this update did not have a material effect on the consolidated financial statements.

In February 2017, the FASB issued ASU 2017-05, Other Income—Gains and Losses from the Derecognition of

Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets, which amends the guidance on nonfinancial assets in ASC 610-20. The amendments clarify that (i) a financial asset is within the scope of ASC 610-20 if it meets the definition of an in substance nonfinancial asset and may include nonfinancial assets transferred within a legal entity to a counter-party, (ii) an entity should identify each distinct nonfinancial asset or in substance nonfinancial asset promised to a counter-party and de-recognize each asset when a counter-party obtains control of it, and (iii) an entity should allocate consideration to each distinct asset by applying the guidance in ASC 606 on allocating the transaction price to performance obligations. Further, ASU 2017-05 provides guidance on accounting for partial sales of nonfinancial assets. The amendments are effective at the same time as the amendments in ASU 2014-09. The Company adopted this standard effective October 1, 2018. The adoption of this guidance did not have a material effect on the consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities. The update better aligns a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company adopted this standard effective January 1, 2019, and does not expect the adoption will have a material effect on the consolidated financial statements.

In June 2018, the FASB issued ASU 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to

Nonemployee Share-Based Payment Accounting. This update provides specific guidance for transactions for acquiring goods

and services from nonemployees and specifies that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (i) financing to the issuer or (ii) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under ASC Topic 606, Revenue from Contracts with Customers. This guidance is effective for fiscal years beginning after December 15, 2019, and interim periods beginning after December 15, 2020. Early adoption is permitted but not earlier than the adoption of ASC Topic 606. The Company does not believe that this guidance will have a material effect on its consolidated financial statements as it has not historically issued share-based payments in exchange for goods or services to be consumed within its operations.

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement, which removes, modifies, and adds certain disclosure requirements related to fair value measurements in ASC Topic 820. This guidance is effective for public companies in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

In October 2018, the FASB issued ASU 2018-16, (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) as a Benchmark Interest Rate for Hedging Purposes. The amendments in this update permit the OIS rate based on SOFR as an eligible benchmark interest rate. The amendments in this update are effective for fiscal years beginning after December 15, 2018. The Company adopted this guidance on January 1, 2019. The Company does not believe this guidance will have a material effect on its consolidated financial statements.

In October 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810: Targeted Improvements to Related Party Guidance for Variable Interest Entities) that expands the application of a specific private company accounting alternative related to VIEs and changes the guidance for determining whether a decision-making fee is a variable interest. It allows private companies the election not to apply the variable interest entity guidance to qualifying common control leasing arrangements. The amendment broadens the scope of the private company alternative to include all common control arrangements that meet specific criteria (not just leasing arrangements). ASU 2018-17 also eliminates the requirement that entities consider indirect interests held through related parties under common control in their entirety when assessing whether a decision-making fee is a variable interest. Instead, the reporting entity will consider such indirect interests on a proportionate basis. The ASU is effective for entities other than private entities for fiscal years beginning after December 15, 2019 with early adoption permitted. The company is currently evaluation the impact this guidance will have on its consolidated financial statements.