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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |  |
U.S. federal statutory income tax rate (as a percent) | 21.00% | 21.00% | 21.00% |
Income tax provision for undistributed foreign earnings | $ 0 |  |  |
Unremitted foreign earnings | 720,200,000 |  |  |
Net change in the total valuation allowance | 37,800,000 | $ 4,100,000 |  |
Tax credit carryforwards | 9,900,000 | 8,600,000 |  |
Unrecognized tax benefits | 10,500,000 | 18,100,000 | $ 7,500,000 | $ 12,300,000
Unrecognized tax benefits that impact on effective tax rate | 2,400,000 |  |  |
Interest expense (income) related to unrecognized tax benefit | 0 | 0 |  |
Accrued interest related to the unrecognized tax benefit reversed | 200,000 |  |  |
Interest accrued on unrecognized tax benefits | 0 | $ 200,000 |  |
Decrease in reasonably possible unrecognized tax benefits within next twelve months | 1,000,000.0 |  |  |
U.S. |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryforwards | $ 6,700,000 |  |  |
U.S. | Minimum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Statute of limitations on years that can be open for examination | 3 years |  |  |
U.S. | Maximum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Statute of limitations on years that can be open for examination | 5 years |  |  |
Foreign country |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carryforwards | $ 380,200,000 |  |  |
Valuation allowance on net operating losses | $ 500,000 |  |  |
Foreign country | Minimum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Statute of limitations on years that can be open for examination | 3 years |  |  |
Foreign country | Maximum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Statute of limitations on years that can be open for examination | 5 years |  |  |

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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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