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Customer and Geographic Information - Schedule Of Long Lived Assets By Geographical Region (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 2,377 $ 2,126
North America    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets 1,936 1,663
China    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets 249 190
United Kingdom    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 192 $ 273