Stock-Based Compensation - Restricted Stock Awards and the 2017 Plan (Details)	9 Months Ended
Sep. 30, 2017 shares
Restricted stock awards
Restricted Stock Awards
Granted (in shares)	1,843,527
Forfeited (in shares)	(45,162)
Outstanding September 30, 2017 (in shares)	1,798,365
2017 Plan
Stock-Based Compensation
Number of common stock shares authorized	6,355,054
2017 MBP \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	100.00%
Restricted Stock Awards
Granted (in shares)	866,708
2016 Profit Interest Plan \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	33.00%
Restricted Stock Awards
Outstanding September 30, 2017 (in shares)	472,102
Minimum \| 2017 MBP \| Restricted stock awards
Stock-Based Compensation
Granted shares based on achievement of the 2017 MBP (as percent)	100.00%
Maximum \| 2017 MBP \| Restricted stock awards
Stock-Based Compensation
Granted shares based on achievement of the 2017 MBP (as percent)	150.00%
Senior management \| 2017 Plan \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	33.00%
Restricted Stock Awards
Granted (in shares)	394,052
Senior management \| Long-term incentive compensation \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	33.00%
Restricted Stock Awards
Granted (in shares)	450,356
Employees \| 2017 Plan \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	33.00%
Restricted Stock Awards
Granted (in shares)	78,050
Board of Directors \| 2017 Plan \| Restricted stock awards
Stock-Based Compensation
Annual vesting percentage	100.00%
Restricted Stock Awards
Granted (in shares)	54,361

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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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- 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.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Represents the percentage of stock awards vesting each year.

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- Definition

The percentage of awards that is granted based on achievement of performance targets.

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