The fair value at approval date of non-option equity instruments granted during the period.

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
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- Definition

Amount of cost capitalized for award under share-based payment arrangement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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-Publisher FASB
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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

Net number of non-option equity instruments granted to participants.

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Long-Term Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortization related to restricted stock/Unit awards and LTIP Unit Awards	$ 2,130	$ 2,003	$ 5,945	$ 5,689
Share-based Payment Arrangement, Amount Capitalized	243		684
Unrecognized compensation related to unvested restricted stock/Unit awards and LTIP Unit Awards	10,963		$ 10,963
Weighted average period of unrecognized compensation expected to be recognized			11 months 4 days
Management \| Performance Share/Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued			36,064
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued	2,527		$ 2,527
Vesting period of restricted stock/Unit awards issued			3 years
Management \| LTIP Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued			166,942
Management \| Restricted Stock/Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued			87,606
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued	$ 6,727		$ 6,727
Vesting period of restricted stock/Unit awards issued			3 years
Management \| Service LTIP Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued			112,428
Director \| Restricted Stock/Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted stock/Unit awards issued			1 year