Stock-Based Compensation - Summary of Restricted Stock, Restricted Stock Unit and Performance Unit Activity (Details)	12 Months Ended
Dec. 31, 2019 $ / shares shares
Time-based restricted stock(1)
Outstanding Awards
Outstanding, beginning balance (shares) \| shares	715,852
Forfeited (shares) \| shares	(19,763)
Vested (shares) \| shares	(309,699)
Outstanding, ending balance (shares) \| shares	386,390
Grant Date Fair Value
Weighted average grant date fair value, beginning balance (in dollars per share) \| $ / shares	$ 23.44
Forfeited, grant date fair value (in dollars per share) \| $ / shares	25.55
Vested, grant date fair value (in dollars per share) \| $ / shares	19.32
Weighted average grant date fair value, ending balance (in dollars per share) \| $ / shares	$ 26.64
Time-based restricted stock units(1)
Outstanding Awards
Outstanding, beginning balance (shares) \| shares	723,354
Awards granted (shares) \| shares	992,825
Forfeited (shares) \| shares	(174,643)
Vested (shares) \| shares	(301,078)
Outstanding, ending balance (shares) \| shares	1,240,458
Grant Date Fair Value
Weighted average grant date fair value, beginning balance (in dollars per share) \| $ / shares	$ 23.78
Awards granted, grant date fair value (in dollars per share) \| $ / shares	17.83
Forfeited, grant date fair value (in dollars per share) \| $ / shares	20.82
Vested, grant date fair value (in dollars per share) \| $ / shares	19.43
Weighted average grant date fair value, ending balance (in dollars per share) \| $ / shares	$ 20.48
Performance-based RSUs
Outstanding Awards
Outstanding, beginning balance (shares) \| shares	0
Forfeited (shares) \| shares	(15,471)
Vested (shares) \| shares	(2,455)
Outstanding, ending balance (shares) \| shares	358,240
Grant Date Fair Value
Weighted average grant date fair value, beginning balance (in dollars per share) \| $ / shares	$ 0
Forfeited, grant date fair value (in dollars per share) \| $ / shares	24.05
Vested, grant date fair value (in dollars per share) \| $ / shares	24.05
Weighted average grant date fair value, ending balance (in dollars per share) \| $ / shares	$ 24.05
Performance-based restricted stock(2)
Outstanding Awards
Outstanding, beginning balance (shares) \| shares	1,338,439
Awards granted (shares) \| shares	376,166
Forfeited (shares) \| shares	(66,112)
Vested (shares) \| shares	(481,820)
Outstanding, ending balance (shares) \| shares	790,507
Grant Date Fair Value
Weighted average grant date fair value, beginning balance (in dollars per share) \| $ / shares	$ 15.07
Awards granted, grant date fair value (in dollars per share) \| $ / shares	24.05
Forfeited, grant date fair value (in dollars per share) \| $ / shares	15.74
Vested, grant date fair value (in dollars per share) \| $ / shares	13.07
Weighted average grant date fair value, ending balance (in dollars per share) \| $ / shares	$ 16.24

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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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.

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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).

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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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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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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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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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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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