Long-lived Tangible Assets - Long-Lived Tangible Assets by Geographic Area (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 103,663	$ 110,558
United States
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	19,199	19,938
People's Republic of China (PRC)
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	63,160	67,625
Mexico
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	15,078	16,644
All other countries
Long-lived Assets from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 6,226	$ 6,351