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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 02, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2040 | Dec. 31, 2024 | Mar. 29, 2020
Income Taxes [Line Items] |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  | $ (11,724) | $ (42,519) | $ (62,936) |  |  |
Foreign tax rate differences benefit in income tax |  | 25,300 | 13,100 | 2,400 |  |  |
Income tax expense reduction due to tax holiday |  | 4,000 | 3,900 | 3,000 |  |  |
Net tax credit carryforwards |  | 57,100 |  |  |  |  |
Net operating loss carryforwards |  | 205,352 |  |  |  |  | $ 1,200
Operating loss carryforwards that will be used in expiration periods |  | 137,100 |  |  |  |  |
Net tax credit carryforwards that will expire |  | 57,109 |  |  |  |  |
Net tax credit carry forwards with indefinite carry forward period |  | 5,400 |  |  |  |  |
Net tax credit carryforwards that expected to be utilized prior to expiry |  | 17,300 |  |  |  |  |
Net decrease in reserve for uncertain tax positions |  | 1,800 |  |  |  |  |
Balance at end of the year of unrecognized tax benefits |  | 8,573 | 6,779 | 6,591 |  |  |
Estimate the range of reasonably possible changes to unrecognized tax positions |  | 1,700 |  |  |  |  |
Accrued interest expense (income) and penalties of unrecognized tax benefits |  | 200 | 0 |  |  |  |
Domestic Tax Authority [Member] |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net tax credit carryforwards |  | 22,400 |  |  |  |  |
Capital Loss Carryforward |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net operating loss carryforwards |  | 100,500 |  |  |  |  |
Capital Loss Carryforward | Grass Valley |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Valuation allowance, deferred tax asset, increase (decrease), amount | $ 23,800 |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  | (22,600) | $ (27,200) | $ 3,300 |  |  |
Scenario, Forecast |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net tax credit carryforwards that will expire |  |  |  |  | $ 49,600 | $ 2,100 |
Net Operating Loss Carry Forward Indefinite Period |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net operating loss carryforwards |  | 58,000 |  |  |  |  |
Net Operating Loss Carry Forwards Expires In 2020 |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net operating loss carryforwards |  | 900 |  |  |  |  |
Net Operating Loss Carry Forwards Expires Between 2021 And 2024 |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net operating loss carryforwards |  | 19,700 |  |  |  |  |
Net Operating Loss Carry Forwards Expires Between 2025 And 2040 |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ 126,800 |  |  |  |  |

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