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Restructuring - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses | $ (598,000) | $ 1,231,000 | $ 3,168,000 | $ 3,145,000
Impairment loss |  | 9,885,000 |  | 20,369,000
Manufacturing Footprint Rationalization |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Other restructuring costs | 16,000 |  | 16,000 |
Manufacturing Footprint Rationalization | Minimum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring and related cost expected total cost | 16,000,000 |  | 16,000,000 |
Manufacturing Footprint Rationalization | Maximum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring and related cost expected total cost | 19,000,000 |  | 19,000,000 |
Advanced Research and Development Rationalization and Site Consolidation |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses |  |  | 5,965,000 |
Other Restructuring Activities |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Impairment loss |  | 0 |  | 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 | (1,691,000) |  | (1,443,000) |
Restructuring reserve accelerated depreciation | 200,000 |  | 442,000 |
Employee Separation Costs | Manufacturing Footprint Rationalization | Minimum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring and related cost expected total cost | 6,500,000 |  | 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 |  | 7,500,000 |
Employee Separation Costs | Other Restructuring Activities |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses | 860,000 | 860,000 | 3,914,000 | 1,259,000
Employee Separation Costs | GPT and CSZ-IC |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses |  | 0 |  | 251,000
Cash Expenditures | Manufacturing Footprint Rationalization | Minimum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring and related cost expected total cost | 13,000,000 |  | 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 |  | 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 |  | 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 |  | 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 |  | 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 |  | 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 |  | 4,000,000 |
Other Restructuring | Other Restructuring Activities |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses | $ 17,000 | 349,000 | $ 239,000 | 349,000
Other Restructuring | GPT and CSZ-IC |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring expenses |  | $ 22,000 |  | $ 861,000

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