Long-Term Compensation - Summary of Performance Award and Service Award Transactions (Details)	12 Months Ended
Dec. 31, 2020 $ / shares shares
Performance Awards/Performance Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, Beginning Balance, Awards \| shares	380,722
Issued, Awards \| shares	59,263
Forfeited, Awards \| shares	(5,681)
Vested, Awards \| shares	(178,211)
Outstanding, Ending Balance, Awards \| shares	256,093
Outstanding, Weighted Average Grant Date Fair Value, Beginning of Period \| $ / shares	$ 12.89
Issued, Weighted Average Grant Date Fair Value \| $ / shares	20.65
Forfeited, Weighted Average Grant Date Fair Value \| $ / shares	13.67
Vested, Weighted Average Grant Date Fair Value \| $ / shares	12.62
Outstanding, Weighted Average Grant Date Fair Value, End of Period \| $ / shares	$ 14.86
Performance RLP Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, Beginning Balance, Awards \| shares	156,702
Issued, Awards \| shares	322,477
Forfeited, Awards \| shares	0
Vested, Awards \| shares	0
Outstanding, Ending Balance, Awards \| shares	479,179
Outstanding, Weighted Average Grant Date Fair Value, Beginning of Period \| $ / shares	$ 12.45
Issued, Weighted Average Grant Date Fair Value \| $ / shares	20.65
Forfeited, Weighted Average Grant Date Fair Value \| $ / shares	0
Vested, Weighted Average Grant Date Fair Value \| $ / shares	0
Outstanding, Weighted Average Grant Date Fair Value, End of Period \| $ / shares	$ 17.97
Service Awards/Service Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, Beginning Balance, Awards \| shares	296,371
Issued, Awards \| shares	80,387
Forfeited, Awards \| shares	(4,009)
Vested, Awards \| shares	(160,829)
Outstanding, Ending Balance, Awards \| shares	211,920
Outstanding, Weighted Average Grant Date Fair Value, Beginning of Period \| $ / shares	$ 30.56
Issued, Weighted Average Grant Date Fair Value \| $ / shares	43.61
Forfeited, Weighted Average Grant Date Fair Value \| $ / shares	33.86
Vested, Weighted Average Grant Date Fair Value \| $ / shares	29.37
Outstanding, Weighted Average Grant Date Fair Value, End of Period \| $ / shares	$ 36.35
Service RLP Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, Beginning Balance, Awards \| shares	110,640
Issued, Awards \| shares	119,596
Forfeited, Awards \| shares	(1,967)
Vested, Awards \| shares	(43,700)
Outstanding, Ending Balance, Awards \| shares	184,569
Outstanding, Weighted Average Grant Date Fair Value, Beginning of Period \| $ / shares	$ 33.64
Issued, Weighted Average Grant Date Fair Value \| $ / shares	42.94
Forfeited, Weighted Average Grant Date Fair Value \| $ / shares	35.58
Vested, Weighted Average Grant Date Fair Value \| $ / shares	33.73
Outstanding, Weighted Average Grant Date Fair Value, End of Period \| $ / shares	$ 39.62

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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- Definition

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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The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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-Publisher FASB
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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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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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