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Segment, Geographic and Customer Information - Schedule of Revenue by Country (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Segment Reporting Information [Line Items]        
Revenue $ 44,496 $ 21,473 $ 80,038 $ 43,215
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Segment Reporting Information [Line Items]        
Revenue 44,496 21,473 80,038 43,215
Taiwan | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Segment Reporting Information [Line Items]        
Revenue 12,009 8,143 28,501 17,973
Hong Kong | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Segment Reporting Information [Line Items]        
Revenue 17,557 5,878 28,991 10,321
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Segment Reporting Information [Line Items]        
Revenue 2,808 1,873 4,042 3,675
Other | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk        
Segment Reporting Information [Line Items]        
Revenue $ 12,122 $ 5,579 $ 18,504 $ 11,246