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Segment Reporting - Geographic Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total [1] $ 56,602 $ 37,256 $ 146,311 $ 81,013
Greater China [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 22,203 19,346 75,634 26,008
United States [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 16,469 4,335 34,275 21,112
Western Europe [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 7,634 5,085 11,160 10,273
Asia (excluding China) [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 4,925 4,935 12,837 12,663
Russia & the CIS [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 1,353 738 4,577 2,962
Latin America [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 1,181 1,616 1,579 3,251
Canada [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total 1,083 384 620 1,327
Rest of the World [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenues, total $ 1,754 $ 817 $ 5,629 $ 3,417
[1] The Company’s largest customer represents 18.2% and 22.2%, respectively, of total Revenues for the three and nine months ended September 30, 2021 (2020 — 11.0% and 11.3%, respectively). No single customer comprises more than 10% of the Company’s total Accounts Receivable as of September 30, 2021 and December 31, 2020.