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Related Party Transactions - Additional Information (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2019
$ / shares
Lite On Semiconductor        
Related Party Transaction [Line Items]        
Business acquisition, conversion price | (per share) $ 1.42     $ 42.50
Cash payments to acquire business $ 437.0      
Lite On Semiconductor        
Related Party Transaction [Line Items]        
Related Party ownership of common stock 15.20%     15.20%
Related Party Transaction, Description of Transaction LSC is our largest stockholder, owning approximately 15.2% of our outstanding Common Stock as of December 31, 2019, and is a member of the Lite-On Group of companies.      
Lite On Semiconductor | Maximum        
Related Party Transaction [Line Items]        
Related Party Transaction Revenues Percentage from Transactions with Related Party 1.00% 1.00% 1.00%  
Keylink        
Related Party Transaction [Line Items]        
Related Party ownership of common stock 5.00%     5.00%
Related Party Transaction, Description of Transaction Keylink is our 5% partner in our Shanghai assembly and test facilities.      
Related Party Transaction Revenues Percentage from Transactions with Related Party 1.00% 1.00% 1.00%  
Related Party Transaction Consulting Fees from Transactions with Related Party $ 15.3 $ 16.6 $ 17.1  
Chengdu Ya Guang Electronic Company Limited ("Ya Guang")        
Related Party Transaction [Line Items]        
Related Party Transaction, Description of Transaction In addition, Chengdu Ya Guang Electronic Company Limited (“Ya Guang”) is our 2% partner in one of our Chengdu assembly and test facilities and our 5% partner in our other Chengdu assembly and test facilities      
Chengdu Ya Guang Electronic Company Limited ("Ya Guang") | Chengdu | Assembly and Test Facility One        
Related Party Transaction [Line Items]        
Related Party ownership of common stock 2.00%     2.00%
Chengdu Ya Guang Electronic Company Limited ("Ya Guang") | Chengdu | Assembly and Test Facility Two        
Related Party Transaction [Line Items]        
Related Party ownership of common stock 5.00%     5.00%