Long-Term Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued	286,986
Amortization related to restricted stock/Unit awards and LTIP Unit Awards	$ 1,762	$ 1,689
Unrecognized compensation related to unvested restricted stock/Unit awards and LTIP Unit Awards	$ 14,923
Weighted average period of unrecognized compensation expected to be recognized	1 year 48 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
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	82,494
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued	$ 6,202
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	102,198

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

No definition available.

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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.

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Unrecognized cost of unvested share-based compensation awards.

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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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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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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.

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

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