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Segment Information - Revenue by Major Customer (Details) - Revenue, net
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
All distributors        
Revenue, Major Customer        
Percentage of revenue 50.00% 48.00% 51.00% 42.00%
Distributor A        
Revenue, Major Customer        
Percentage of revenue 24.00% 31.00% 28.00% 30.00%
Top five end customers        
Revenue, Major Customer        
Percentage of revenue 68.00% [1] 76.00% [1] 61.00% 78.00%
End customer A        
Revenue, Major Customer        
Percentage of revenue 40.00% [1] 46.00% [1] 38.00% 49.00%
End customer B        
Revenue, Major Customer        
Percentage of revenue 10.00% [1] 12.00% [1] 6.00% 14.00%
[1] End customers include customers who purchase directly from us, as well as customers who purchase our products indirectly through distributors.