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Costs Associated with Exit and Restructuring Activities -Additional Information (Details) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) Facility | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) Facility | Dec. 31, 2019 USD ($) | Dec. 31, 2017 USD ($)
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | $ 1,041,000 | $ 2,342,000 | $ 1,416,000 | $ 5,337,000 |  |
Restructuring reserve | 1,494,000 |  | 1,494,000 |  | $ 1,993,000 |
Workforce Reduction |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | 33,000 |  | 440,000 |  |  |
Facilities |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges |  | $ 1,671,000 |  | $ 1,671,000 |  |
Restructuring and related cost, number of facilities | Facility |  | 3 |  | 3 |  |
Lease Termination | Quality Thermistor, Inc. |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges |  | $ 800,000 |  | $ 800,000 |  |
Workforce and Building Relocation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges |  | $ 871,000 |  | $ 871,000 |  |
Workforce and Building Relocation | Foreign |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, number of facilities | Facility |  | 2 |  | 2 |  |
Other Charges |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring reserve | 14,000 |  | 14,000 |  | 1,057,000 |
September 2020 Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | 1,008,000 |  | 1,008,000 |  |  |
Restructuring reserve | 583,000 |  | 583,000 |  |  |
September 2020 Plan | Minimum |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost of plan | 5,000,000 |  | 5,000,000 |  |  |
Expected initiatives cost incurred not qualify as restructuring charges | 5,000,000 |  | 5,000,000 |  |  |
September 2020 Plan | Maximum |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost of plan | 6,000,000 |  | 6,000,000 |  |  |
Expected initiatives cost incurred not qualify as restructuring charges | 6,000,000 |  | 6,000,000 |  |  |
June 2016 Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost of plan | 13,400,000 |  | 13,400,000 |  |  |
Restructuring charges | 0 | $ 671,000 | (32,000) | $ 3,914,000 |  |
Restructuring reserve | 23,000 |  | 23,000 |  | 233,000 |
Restructuring and related cost additional cost |  |  |  |  |  | $ 1,100,000
June 2016 Plan | Workforce Reduction |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost of plan | 3,075,000 |  | 3,075,000 |  |  |
June 2016 Plan | Other Charges |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring and related cost, expected cost of plan | 1,300,000 |  | 1,300,000 |  |  |
April 2014 Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | 0 | $ (248,000) | 0 | $ (248,000) |  |
Restructuring reserve | $ 874,000 |  | $ 874,000 |  | $ 703,000 |

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