Long-lived Tangible Assets - Long-Lived Tangible Assets by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 103,227	$ 110,558
United States
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	16,327	19,938
People's Republic of China
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	61,320	67,625
Mexico
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	20,624	16,644
All other countries
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 4,956	$ 6,351