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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Loss Carryforwards [Line Items] |  |  |
Tax cuts and jobs act of 2017 complete accounting deemed repatriation federal tax | $ 5,200 |  |
Tax cuts and jobs act of 2017 complete accounting estimated payments of liability | 1,000 |  |
Deferred Tax Assets, Gross | 99,188 | $ 40,525 |
Deferred Tax Assets, Valuation Allowance | $ 81,795 | 4,276 |
Cumulative loss incurred over the period | 4 years |  |
Deferred Tax Assets, Tax Credit Carryforwards | $ 5,326 | 7,879 |
Operating Loss Carryforwards | 25,600 |  |
Deferred Tax, Operating Loss Carryforwards | 44,358 | 5,371 |
Liability for uncertain tax positions | 300 | 200 |
Cash Refunds from Income Taxes | 14,900 |  |
Paid Cash for Income Taxes |  | 17,200 | $ 27,300
Foreign Income Tax Credit |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred Tax Assets, Tax Credit Carryforwards | 4,500 |  |
U.S |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Research and development credit carryforwards | 700 |  |
U.S | Foreign Income Tax Credit |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred Tax Assets, Tax Credit Carryforwards | $ 3,800 |  |
Tax credit carryforward expiration year | 2022 |  |
Foreign Tax Authority | CA |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating Loss Carryforwards | $ 28,400 |  |
Foreign Tax Authority | Iceland And Poland |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating Loss Carryforwards | $ 8,800 |  |
Foreign Tax Authority | Iceland And Poland | Minimum [Member] |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carry forwards expire period | 5 years |  |
Foreign Tax Authority | Iceland And Poland | Maximum |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carry forwards expire period | 10 years |  |
Foreign Tax Authority | CA |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carry back period | 3 years |  |
Operating loss carryforwards period | 20 years |  |
Foreign Tax Authority | Foreign Income Tax Credit | United Kingdom |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred Tax Assets, Tax Credit Carryforwards | $ 700 |  |
State and Foreign |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating Loss Carryforwards | 371,200 | 55,200 |
Deferred Tax, Operating Loss Carryforwards | 44,400 | $ 5,400 |
State and Local Jurisdiction |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating Loss Carryforwards | $ 181,500 |  |
State and Local Jurisdiction | Latest Tax Year |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Tax credit carryforward expiration year | 2020 |  |
State and Local Jurisdiction | Earliest Tax Year |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Tax credit carryforward expiration year | 2039 |  |

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