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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Line Items] |  |  |  |
Federal statutory rate |  | 21.00% | 21.00% | 35.00%
Tax effect of pre-Separation earnings |  | $ 0 | $ 0 | $ (16,210)
Write-off of permanent outside basis difference resulting from change in tax status | $ 51,000 | 0 | 0 | 50,687
Effect of U.S. federal tax rate change |  | 0 | 0 | 80,298
Deferred income tax liabilities, Net |  |  |  | $ 246,000
Deferred tax assets, net operating loss carryforwards, federal |  | 7,100 |  |
Deferred tax assets, net operating loss carryforwards, state |  | 1,500 |  |
Unrecognized tax benefits, if recognized, would affect annual tax rate |  | 1,500 | $ 600 |
Federal |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets, tax credit carryforwards research and development |  | $ 1,800 |  |
Tax credit carryforward, expiration period |  | 20 years |  |
State |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets, tax credit carryforwards research and development |  | $ 800 |  |
Tax credit carryforward, expiration period |  | 5 years |  |

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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e31931-109318 + Details
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