Business Acquisitions Costs Of Acquired Entity Purchase Price.

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- Definition

Number of limited partnership units of the operating partnership units issued.

+ References

No definition available.

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Value of limited partnership units of the operating partnership units issued.

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No definition available.

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- Definition

The percentage of interest to acquire.

+ References

No definition available.

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- Definition

Purchase price of interests.

+ References

No definition available.

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- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-10.(c)(7)(ii))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph c

-Subparagraph 3(ii)(A)

-Article 4

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- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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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

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents a description of such arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)(2)

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- Definition

The expenses and losses recorded for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(3)

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- Definition

The net gains or losses recognized for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

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- Definition

The revenues and gains recognized recorded for each transaction with the acquiree that is recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

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- Definition

Carrying amount of the equity interests owned by noncontrolling partners in an operating partnership included in the entity's consolidated financial statements.

+ References

No definition available.

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Business Acquisitions (Details Textual) - USD ($) $ in Thousands, shares in Millions	1 Months Ended		3 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
	Sep. 23, 2015	Jun. 25, 2015	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Apr. 30, 2015	Dec. 31, 2013	Feb. 26, 2013
Business Acquisition [Line Items]
Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized						$ 2,800
Business Combination, Separately Recognized Transactions, Net Gains and Losses								$ 33,400
Amortization			$ 1,400			2,300
Noncontrolling Interest in Operating Partnerships				$ 4,600
Cash Acquired from Acquisition						$ 5,802
Acquisition Costs, Period Cost		$ 2,300
Subsequent Event [Member]
Business Acquisition [Line Items]
Acquisition Costs, Period Cost	$ 2,300
Cb Portfolio Acquisition [Member]
Business Acquisition [Line Items]
Our Ownership											48.00%
Cb Portfolio Acquisition [Member] \| Purchase and Sale Agreement [Member]
Business Acquisition [Line Items]
Our Ownership											48.00%
Copper Beech [Member]
Business Acquisition [Line Items]
Business Acquisitions Costs Of Acquired Entity Purchase Price											$ 230,600
Our Ownership			100.00%		100.00%	100.00%		67.00%		48.00%
Business Combination, Contingent Consideration Arrangements, Description						100% interest in 29 student housing properties; ⋅ 100% interest in 2 undeveloped land parcels and 1 corporate office building; ⋅ 48% interest in 5 student housing properties; and ⋅ no ownership interest in 1 student housing property (Copper Beech Kalamazoo – Phase I).
Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized						$ 2,800	$ 800
Business Combination, Separately Recognized Transactions, Net Gains and Losses			$ 6,400	$ 21,600		28,000
Amortization						23,500	$ 18,400
First CB Closing [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs						58,900
Business Combination, Separately Recognized Transactions, Revenues and Gains Recognized						25,800
Business Combination, Separately Recognized Transactions, Net Gains and Losses						$ 20,900
Limited Partnership Units Of Operating Partnership Units Issued			10.4		10.4	10.4
Limited Partnership Units Of Operating Partnership Units Issued Value			$ 71,300		$ 71,300	$ 71,300
Depreciation					8,200
Amortization					$ 23,500
Second CB Closing [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs						$ 1,400
Limited Partnership Units Of Operating Partnership Units Issued			2.0		2.0	2.0
Limited Partnership Units Of Operating Partnership Units Issued Value			$ 13,000		$ 13,000	$ 13,000
Copper Beech Kalamazoo [Member]
Business Acquisition [Line Items]
Our Ownership			48.00%		48.00%	48.00%
Copper Beech Klondike And Copper Beech Northbrook [Member]
Business Acquisition [Line Items]
Our Ownership		100.00%
Purchase Price Of Interests									$ 4,600
Copper Beech Klondike [Member]
Business Acquisition [Line Items]
Percentage Of Interest To Acquire									15.00%
Copper Beech Northbrook [Member]
Business Acquisition [Line Items]
Percentage Of Interest To Acquire									16.00%