Long term incentive partnership units outstanding.

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- Definition

Long Term Incentive Partnership Units Value Per Unit

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No definition available.

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- Definition

Long term incentive partnership units vested.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Total Grant Date Fair Value

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No definition available.

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- Definition

ShareBasedCompensationArrangementByShareBasedPaymentAward,Estimated Shares Expected to Vest

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No definition available.

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- Definition

Share based compensation plan.

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No definition available.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Shares Not Subject to Maximum

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-SubTopic 10

-Section 50

-Paragraph 2

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Name Accounting Standards Codification

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Gross number of share options (or share units) granted during the period.

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Share-Based Compensation Plan (Details Textual) - USD ($) $ / shares in Units, $ in Millions							3 Months Ended		9 Months Ended
	Jul. 27, 2015	Feb. 11, 2015	Feb. 04, 2014	Dec. 13, 2013	Jan. 30, 2013	Feb. 08, 2012	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-Based Compensation Plan (Textual) [Abstract]
Share-based award vesting period									6 years
Number of common shares available for issuance under the 2009 Equity Incentive Plan							762,013		762,013
Operating Partnership outstanding							236,351		236,351		236,351
LTIP units, vested							9,469		9,469
Restricted Stock [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Allocated Share-based Compensation Expense							$ 0.4	$ 0.4	$ 1.2	$ 1.1
Total unrecognized compensation cost							3.1		$ 3.1
Weighted average remaining vesting period (in years)									2 years 7 months
Share-based equity award grant									46,446
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period									50,827
Restricted Stock [Member] \| Minimum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based award vesting period									3 years
Restricted Stock [Member] \| Maximum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based award vesting period									5 years
Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Allocated Share-based Compensation Expense							1.6	2.4	$ 4.6	5.2
Total unrecognized compensation cost							$ 12.2		$ 12.2
Weighted average remaining vesting period (in years)									2 years
LongTermIncentivePartnershipUnitsClassA [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Value of LTIP grants per share							$ 8.50		$ 8.50
LTIP units, vested							9,469		9,469
LongtermincentivepartnershipunitsclassB [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Value of LTIP grants per share				$ 29.19
LTIP Units Granted				226,882
Grant date fair value of performance-based equity awards				$ 6.6
Long Term Incentive Partnership Units [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Allocated Share-based Compensation Expense							$ 0.3	$ 0.7	$ 0.8	$ 2.0
Total unrecognized compensation cost							$ 4.6		$ 4.6
Weighted average remaining vesting period (in years)									2 years 2 months
February 2012 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant						72,056
January 2013 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant					72,118
Shares Expected to Vest Not Subject to Maximum					11,753
January 2013 [Member] \| Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum					0.00%
January 2013 [Member] \| Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum					200.00%
December 2013 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant				252,088
December 2013 [Member] \| Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum				0.00%
December 2013 [Member] \| Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum				200.00%
February 2014 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant			66,483
Shares Expected to Vest Not Subject to Maximum			12,261
February 2014 [Member] \| Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum			0.00%
February 2014 [Member] \| Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum			200.00%
February 2015 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant		44,962
Shares Expected to Vest Not Subject to Maximum		8,559
February 2015 [Member] \| Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum		0.00%
February 2015 [Member] \| Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Estimated Shares Expected to Vest Minimum and Maximum		200.00%
July 2015 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based equity award grant	771
Officer Awards [Member] \| February 2012 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period									120,016
Nonexecutive management award [Member] \| February 2012 [Member] \| Performance Shares [Member]
Share-Based Compensation Plan (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period									87,556