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Equity-Based Compensation - Summary of Equity-Based Compensation Expense related to Non-Vested RSUs (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Service-Based RSUs
Share-based Compensation
Unrecognized compensation cost	$ 1,973
Weighted average period	1 year 11 months 10 days
Performance and market-based RSU's
Share-based Compensation
Unrecognized compensation cost	$ 3,326
Weighted average period	1 year 7 months 20 days
RSUs
Share-based Compensation
Unrecognized compensation cost	$ 5,299
Weighted average period	1 year 8 months 29 days

X

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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X

- Definition

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.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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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- Details

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