Business Combination, Acquisition Related Costs, Abandoned Pursuit Costs

No definition available.

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value resulting from a casualty event.

+ References

No definition available.

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- Definition

Insurance proceeds received relating to a casualty loss.

+ References

No definition available.

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- Definition

Represents the number of apartment homes acquired during the period.

+ References

No definition available.

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- Definition

Number of Communities Acquired

+ References

No definition available.

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- Definition

Number of Land Parcels Impaired

+ 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

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

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-Paragraph 2
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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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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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Amount of gain (loss) on sale or disposal of other assets.

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-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

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-Name Accounting Standards Codification
-Topic 225
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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- Definition

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
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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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Investments in Real Estate Entities (Details 3) $ in Thousands	3 Months Ended		9 Months Ended		15 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) community land_parcel home	Sep. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)	May 31, 2016	Jan. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Investments in unconsolidated real estate entities	$ 176,882		$ 176,882					$ 216,919
Gain on sale of other real estate	10,778	$ 0	$ 10,921	$ 9,647
Number of Communities Acquired \| community			4
Current interest rate (as a percent)						3.35%
Business Combination, Acquisition Related Costs, Abandoned Pursuit Costs	3,804	3,391	$ 7,086	5,251
Real Estate [Line Items]
Impairment of Real Estate	0	658	$ (3,935)	(10,668)
Number of Land Parcels Impaired \| land_parcel			3
Real Estate Investment Property, Net	14,812,162		$ 14,812,162					$ 13,847,526
Avalon Hoboken [Member]
Business Acquisition [Line Items]
Number of Apartment Homes, Acquired \| home			217
Business Combination, Consideration Transferred			$ 129,700
Avalon Potomac Yard [Member]
Business Acquisition [Line Items]
Number of Apartment Homes, Acquired \| home			323
Business Combination, Consideration Transferred			$ 108,250
Avalon Columbia Pike [Member]
Business Acquisition [Line Items]
Number of Apartment Homes, Acquired \| home			269
Business Combination, Consideration Transferred			$ 102,000
Studio 77 [Member]
Business Acquisition [Line Items]
Number of Apartment Homes, Acquired \| home			156
Business Combination, Consideration Transferred			$ 72,100
Notes Payable Maturities 2020 [Member] \| Secured notes \| Avalon Hoboken [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt							$ 67,904
Current interest rate (as a percent)							4.18%
Notes Payable Maturities 2019 [Member] \| Secured notes \| Avalon Columbia Pike [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	$ 70,507		$ 70,507
Current interest rate (as a percent)	3.38%		3.38%
Land [Member]
Real Estate [Line Items]
Impairment of Real Estate		0	$ 10,500	0
Avalon at Edgewater [Member]
Real Estate [Line Items]
Impairment of Real Estate			(8,702)	(15,663)
Insurance Proceeds			29,008	44,142	$ 73,150
Real Estate Investment Property, Net		21,844		21,844
Casualty Loss		$ 658		6,635
Gain on Business Interruption Insurance Recovery			20,306
New England [Member]
Real Estate [Line Items]
Impairment of Real Estate			(5,732)
Insurance Proceeds			8,493
Casualty Loss			$ 2,761
AVA North Point [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	55.00%		55.00%
Gain on sale of other real estate			$ 10,621
Avalon Clarendon [Member]
Business Acquisition [Line Items]
Equity Method Investments	$ 120,300		$ 120,300
Number of Apartment Homes, Acquired \| home			300
Gains (Losses) on Sales of Investment Real Estate			$ 4,322
Investments in unconsolidated real estate entities	$ 115,848		$ 115,848
New England [Member]
Real Estate [Line Items]
Impairment of Real Estate				4,195
New England [Member] \| Avalon at Edgewater [Member]
Real Estate [Line Items]
Impairment of Real Estate				$ 26,039
Joint Venture Partner [Member] \| AVA North Point [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	45.00%		45.00%