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v3.20.4

Restructuring Charges (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jan. 30, 2018 USD ($)
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring and other charges | $ 4,089 | $ 8,821 | $ 2,217 |
2020 Plan |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring, number of positions eliminated | 70 |  |  |
Restructuring and other charges | $ 3,300 |  |  |
Restructuring payments | 900 |  |  |
Restructuring accrual | 2,400 |  |  |
2019 Plan |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring, number of positions eliminated |  | 80 |  |
Restructuring and other charges | $ 800 | $ 8,800 |  |
2018 Plan |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring, number of positions eliminated |  |  | 50 |
Assets held-for-sale |  |  | $ 3,500 |
2018 Plan | Restructuring and other charges |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Gain on disposal of assets held for sale |  |  | 1,200 |
2018 Plan | Employee severance |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring and other charges |  |  | 2,200 |
2018 Plan | Employee severance | Other |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring and other charges |  |  | 2,000 |
2018 Plan | Employee severance | Corporate |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Restructuring and other charges |  |  | $ 200 |
2018 Plan | Minimum |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Company estimate of the aggregate restructuring cost |  |  |  | $ 2,000
2018 Plan | Maximum |  |  |  |
Restructuring and related costs, positions eliminated |  |  |  |
Company estimate of the aggregate restructuring cost |  |  |  | $ 5,000

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