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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Tax Act: |  |  |  |
U.S. federal corporate income tax rate | 21.00% | 21.00% | 21.00% | 35.00%
Tax Act, provisional tax charge |  |  |  | $ 15,000
Tax Act, provisional tax charge, subsequent adjustment |  |  | $ 4,900 |
Tax Act, one-time transition tax on certain unremitted foreign earnings |  |  |  | 20,900
Tax Act, one-time transition tax on certain unremitted foreign earnings, subsequent adjustment |  |  | 8,100 |
Valuation Allowance: |  |  |  |
Other | $ 9,051 | $ 8,517 |  |
Tax credits | 40,188 | 47,411 |  |
Valuation allowance, deferred tax asset, increase (decrease) in amount during the period |  | (12,800) |  |
Income Tax Uncertainties: |  |  |  |
Unrecognized tax benefit | 24,310 | 29,000 | 28,406 | $ 27,237
Net unrecognized tax benefits that, if recognized, would favorably impact the effective income tax rate | 23,200 | 28,200 |  |
Increase (decrease) in unrecognized tax benefits due to the settlement of various audits and the expiration of statutes of limitations | (3,600) |  |  |
Accrued interest and penalties related to income tax liabilities | 1,200 | 1,200 |  |
Aggregate amount of interest and penalties expense (benefit) recorded in the statement of operations | 100 | 200 | (100) |
Revision of Prior Period, Reclassification, Adjustment | Deferred Tax Assets, Operating Lease |  |  |  |
Valuation Allowance: |  |  |  |
Other |  | 13,000 |  |
Revision of Prior Period, Reclassification, Adjustment | Deferred Tax Liabilities, Operating Lease Right-Of-Use Asset |  |  |  |
Valuation Allowance: |  |  |  |
Other |  | 11,900 |  |
Revision of Prior Period, Reclassification, Adjustment | Deferred Tax Assets, Other |  |  |  |
Valuation Allowance: |  |  |  |
Tax credits |  | 5,500 |  |
Other Noncurrent Liabilities |  |  |  |
Income Tax Uncertainties: |  |  |  |
Unrecognized tax benefit | 17,700 | 22,400 |  |
Foreign |  |  |  |
Valuation Allowance: |  |  |  |
Valuation allowance, deferred tax asset, increase (decrease) in amount during the period |  | $ (15,500) | $ 15,500 |
Operating Loss Carryforwards: |  |  |  |
Operating loss carryforwards | 25,000 |  |  |
Operating loss carryforwards, valuation allowance | 700 |  |  |
Operating loss carryforwards, not subject to expiration | $ 22,800 |  |  |
Operating loss carryforwards, expiration period | 10 years |  |  |
Tax Credit Carryforward: |  |  |  |
Tax credit carryfoward | $ 38,900 |  |  |
Tax credit carryforward, valuation allowance | 2,300 |  |  |
Domestic Federal |  |  |  |
Operating Loss Carryforwards: |  |  |  |
Operating loss carryforwards | 59,900 |  |  |
Domestic Federal | General Business Tax Credit Carryforward |  |  |  |
Tax Credit Carryforward: |  |  |  |
Tax credit carryfoward | 17,100 |  |  |
State |  |  |  |
Operating Loss Carryforwards: |  |  |  |
Operating loss carryforwards, deferred tax asset, subject to expiration | 1,500 |  |  |
Operating loss carryforwards, valuation allowance | 1,200 |  |  |
State | General Business Tax Credit Carryforward |  |  |  |
Tax Credit Carryforward: |  |  |  |
Tax credit carryfoward | 800 |  |  |
Other Foreign Jurisdiction |  |  |  |
Tax Credit Carryforward: |  |  |  |
Tax credit carryfoward | 2,300 |  |  |
Tax credit carryforward, valuation allowance | 1,200 |  |  |
Tax credit carryforward, not subject to expiration | $ 1,100 |  |  |
Tax credit carryforward, expiration period | 7 years |  |  |

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