Derivative, Notional Amounts Entered into During Period

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- Definition

Derivative, Notional Amounts Settled During Period

+ References

No definition available.

+ Details

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- Definition

Represents the number of ventures in which the entity is required to purchase interest in the investment at guaranteed minimum amount.

+ References

No definition available.

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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- Definition

Period when adjustments to the carrying value of an interest-bearing hedged item are amortized upon discontinuation of the interest rate fair value hedge, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 35
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=82917030&loc=d3e75592-113984

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

No definition available.

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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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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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- Definition

Amount of gain recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

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- Definition

Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 20
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- Definition

The net cash outflow or inflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 9
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Fair Value (Details)	1 Months Ended			3 Months Ended		9 Months Ended
Fair Value (Details)	Jun. 30, 2017 USD ($)	May 31, 2017 USD ($)	Apr. 30, 2017 USD ($)	Sep. 30, 2017 USD ($) community venture derivative	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) community derivative	Sep. 30, 2016 USD ($)
Derivative instruments and Hedging Activities
Gain on fair value hedge ineffectiveness						$ (753,000)
Derivative, notional amounts settled during period	$ 214,900,000	$ 400,000,000	$ 185,100,000			800,000,000
Receipts (payments) for termination of forward interest rate swaps	$ 4,078,000	$ (1,361,000)	$ (2,326,000)			$ (391,000)	$ 14,847,000
Number of operating apartment communities \| community				263		263
Estimated hedging losses to be reclassified from accumulated other comprehensive loss into earnings within the next twelve months						$ 376,000
Amortization period of deferred gain (loss) on discontinuation of interest rate fair value hedge						10 years
Income (loss) on cash flow hedges				$ 359,000	$ 719,000	$ (15,654,000)	$ (73,826,000)
Cash Flow Hedges
Derivative instruments and Hedging Activities
Number of derivative instruments held \| derivative				7		7
Interest Rate Cap \| Cash Flow Hedges
Derivative instruments and Hedging Activities
Notional amount				$ 35,256,000		$ 35,256,000
Interest Rate Swap \| Cash Flow Hedges
Derivative instruments and Hedging Activities
Notional amounts entered into during period				50,000,000		300,000,000
Notional amount				$ 300,000,000		$ 300,000,000
Put Option
Derivative instruments and Hedging Activities
Number of ventures in which entity is required to purchase interest in investment at guaranteed minimum amount \| venture				3
Not Designated as Hedging Instrument
Derivative instruments and Hedging Activities
Number of derivative instruments held \| derivative				14		14
Not Designated as Hedging Instrument \| Interest Rate Cap
Derivative instruments and Hedging Activities
Notional amount				$ 690,053,000		$ 690,053,000
Reclassification out of Accumulated Other Comprehensive Income
Derivative instruments and Hedging Activities
Estimated hedging losses to be reclassified from accumulated other comprehensive loss into earnings within the next twelve months						$ 7,012,000