Number of units acquired.

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- Definition

The number of units sold by the entity during the period.

+ References

No definition available.

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- Definition

Preferred Stock, Dividend Rate, Contingent Return Rate

+ References

No definition available.

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- Definition

Preferred Stock, Dividend Rate, Initial Measurement Period

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

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

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-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

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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-Name Accounting Standards Codification
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-Paragraph 3
-Subparagraph (a)(1)
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- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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-Paragraph 28
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- Definition

The cash outflow to reacquire preferred stock during the period.

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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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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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The excess of (1) fair value of the consideration transferred to the holders of the preferred stock over (2) the carrying amount of the preferred stock in the registrant's balance sheet, during the accounting period.

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- Definition

The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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-Publisher FASB
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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (b)
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- Definition

Revenue from the sale of commercial, industrial, or residential property during the period. This element is more likely than not relevant to an entity for which real estate operations are a principal activity. If real estate operations are not a principal activity, the reporting entity would likely use a gain (loss) on sale of property, plant, or equipment type element.

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-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Significant Transactions During the Second Quarter of 2016 and Subsequent Events (Details)	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	May 31, 2016 USD ($) apartment	Apr. 30, 2016 USD ($) unit $ / shares shares	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Payments to acquire preferred equity investments						$ 96,698,000	$ 97,512,000
Excess of redemption value of preferred stock over the carrying value			$ 0		$ 0	$ 2,541,000	$ 0
Unsecured Bonds 3.375% [Member] \| Unsecured Debt [Member]
Schedule of Equity Method Investments [Line Items]
Debt instrument, face amount		$ 450,000,000
Debt Instrument, interest rate, stated percent		3.375%
Series H Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Preferred stock, stated interest percentage		7.125%				7.125%		7.125%
Preferred stock, shares issued (in shares) \| shares		2,950,000
Preferred stock, shares outstanding (in shares) \| shares		2,950,000
Cumulative redeemable preferred stock redemption price per share (in dollars per share) \| $ / shares		$ 25.00
Redemption of Series H Preferred Stock		$ 73,800,000
Excess of redemption value of preferred stock over the carrying value				$ 2,500,000
BEXAWE, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Preferred equity investment, ownership (as a percentage)		50.00%
Canyon Creek [Member] \| BEXAWE, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Number of units sold (in number of units) \| unit		200
Sales of real estate		$ 53,500,000
Gain on sale of properties		5,600,000
Repayments of secured debt		$ 26,300,000
624 Yale Apartments [Member]
Schedule of Equity Method Investments [Line Items]
Payments to acquire preferred equity investments	$ 23,700,000
Number of units acquired (in number of units) \| apartment	206
Preferred stock, stated interest percentage	10.00%
Preferred stock, dividend rate, initial measurement period (in months)	30 months
Preferred stock, contingent return rate (as a percent)	8.00%