Long-lived Tangible Assets - Long-Lived Tangible Assets by Geographic Area (Details) - USD ($) $ in Thousands |
Jun. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Long-lived Assets from External Customers and Long-Lived Assets [Line Items] | ||
| Total long-lived tangible assets | $ 101,583 | $ 106,807 |
| Accumulated depreciation | 161,800 | 154,200 |
| United States | ||
| Long-lived Assets from External Customers and Long-Lived Assets [Line Items] | ||
| Total long-lived tangible assets | 15,691 | 15,411 |
| People's Republic of China | ||
| Long-lived Assets from External Customers and Long-Lived Assets [Line Items] | ||
| Total long-lived tangible assets | 60,815 | 64,197 |
| Mexico | ||
| Long-lived Assets from External Customers and Long-Lived Assets [Line Items] | ||
| Total long-lived tangible assets | 21,475 | 22,410 |
| All other countries | ||
| Long-lived Assets from External Customers and Long-Lived Assets [Line Items] | ||
| Total long-lived tangible assets | $ 3,602 | $ 4,789 |