Related Parties - Schedule of Account Receivable and Payable of Related Party Transactions (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Accounts receivable	$ 4,900	$ 4,167
Accounts payable	9,667	9,469
Lite On Semiconductor
Related Party Transaction [Line Items]
Accounts receivable	225	55
Accounts payable	3,731	2,845
Keylink
Related Party Transaction [Line Items]
Accounts receivable	4,675	4,112
Accounts payable	4,844	5,147
Nuvoton
Related Party Transaction [Line Items]
Accounts payable	$ 1,092	$ 1,477