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Restructuring - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) Facility
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | $ 5,803,000 | $ 12,919,000 | $ 14,772,000
Impairment loss |  | 21,206,000 | 11,476,000
Manufacturing Footprint Rationalization |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | 7,137,000 |  |
Other restructuring costs | 332,000 |  |
Manufacturing Footprint Rationalization | Minimum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 16,000,000 |  |
Manufacturing Footprint Rationalization | Maximum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 19,000,000 |  |
Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | 4,669,000 |  |
Impairment loss |  | 425,000 |
GPT and CSZ-IC |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | 2,303,000 |  |
Employee Separation Costs | Manufacturing Footprint Rationalization |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | (832,000) | 4,863,000 |
Restructuring reserve accelerated depreciation | 687,000 |  |
Restructuring reserve accelerated depreciation |  | 2,087,000 |
Employee Separation Costs | Manufacturing Footprint Rationalization | Minimum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 6,500,000 |  |
Employee Separation Costs | Manufacturing Footprint Rationalization | Maximum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 7,500,000 |  |
Employee Separation Costs | Other Restructuring Activities |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | 5,382,000 | 2,942,000 | 6,598,000
Employee Separation Costs | Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  |  | 1,094,000
Employee Separation Costs | GPT and CSZ-IC |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  | 251,000 | 757,000
Cash Expenditures | Manufacturing Footprint Rationalization | Minimum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 13,000,000 |  |
Cash Expenditures | Manufacturing Footprint Rationalization | Maximum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 16,000,000 |  |
Restructuring Capital Expenditures | Manufacturing Footprint Rationalization | Minimum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 3,500,000 |  |
Restructuring Capital Expenditures | Manufacturing Footprint Rationalization | Maximum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 4,500,000 |  |
Accelerated Depreciation and Impairment | Manufacturing Footprint Rationalization |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 3,000,000 |  |
Other Restructuring | Manufacturing Footprint Rationalization | Minimum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 3,000,000 |  |
Other Restructuring | Manufacturing Footprint Rationalization | Maximum |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring and related cost expected total cost | 4,000,000 |  |
Other Restructuring | Other Restructuring Activities |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses | $ 234,000 | 1,360,000 | 2,869,000
Other Restructuring | Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  |  | 643,000
Other Restructuring | GPT and CSZ-IC |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  | $ 991,000 | 304,000
Loss on the Sale of Battery Management Systems | Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  |  | 1,107,000
Asset Disposal Costs | Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring expenses |  |  | $ 1,400,000
Facility Closing | Advanced Research and Development Rationalization and Site Consolidation |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Number of leased facilities vacated | Facility |  |  | 2

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