Income Taxes - Reconciliation of Effective Tax Rate (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	(35.00%)	(35.00%)	(35.00%)	(35.00%)
State income taxes, net of federal benefit	14.30%	12.00%	6.70%	9.20%
Non-U.S. income taxed at different rates	8.90%	16.40%	5.40%	7.70%
Reduction in tax benefit related to stock-based awards	15.80%	(0.00%)	14.10%	(0.00%)
Other	(3.50%)	(26.90%)	(3.60%)	(22.00%)
Effective income tax rate	0.50%	(33.50%)	(12.40%)	(40.10%)

Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Publisher FASB
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

+ References

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