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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Holiday [Line Items] |  |  |
Document Fiscal Year Focus | 2016 |  |
Effective Income Tax Rate Reconciliation [Abstract] |  |  |
U.S. Federal income tax rate | 35.00% | 35.00% | 35.00%
State and local taxes, net of Federal income tax benefit | 1.00% | (6.80%) | (0.30%)
Foreign operations tax effect | (28.00%) | (42.60%) | (10.70%)
Research & experimentation tax credits | (6.00%) | (11.30%) | (1.60%)
Valuation allowance | 74.60% | 103.10% | (0.10%)
Tax contingencies | (0.50%) | (2.10%) | 0.60%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent | 4.70% | 8.70% | 2.60%
Effective Income Tax Rate Reconciliation, Tax Holiday, Percent | (58.60%) | (79.90%) | (19.00%)
Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Percent | 6.80% | 12.70% | 1.30%
Other, principally non-tax deductible items | 0.00% | 5.30% | 0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent | 8.80% | 4.30% | 0.00%
Prior period items | 0.20% | 0.60% | 2.00%
Effective income tax rate | 38.00% | 27.00% | 9.80%
Foreign Tax Authority |  |  |
Effective Income Tax Rate Reconciliation [Abstract] |  |  |
Effective income tax rate reconciliation, tax holiday | $ 17.5 | $ 17.7 | $ 22.7
Income tax holiday benefit (usd per share) | $ 0.20 | $ 0.20 | $ 0.27
Inland Revenue, Singapore (IRAS) | Foreign Tax Authority |  |  |
Effective Income Tax Rate Reconciliation [Abstract] |  |  |
Effective Income Tax Rate Reconciliation, Tax Holiday, Percent | (7.20%) |  |
Foreign statutory income tax rate | 24.00% |  |

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