Equity-Based Compensation - Summary of Equity-Based Compensation Expense (Details 2) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity-Based Compensation
Restricted stock units	$ 2,738	$ 3,195	$ 2,660
CTS Cash Settled Awards [Member]
Equity-Based Compensation
Restricted stock units	76	16	17
Service-Based RSUs
Equity-Based Compensation
Restricted stock units	1,997	1,944	1,771
Performance-Based RSUs
Equity-Based Compensation
Restricted stock units	665	1,235	872
RSUs
Equity-Based Compensation
Restricted stock units	2,738	3,195	2,660
Income tax benefit	$ 1,029	$ 1,201	$ 1,000

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ 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 (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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