Related Parties - Schedule of Account Receivable and Payable of Related Party Transactions (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Accounts receivable	$ 6,755	$ 4,167
Accounts payable	11,981	9,469
Lite On Semiconductor
Related Party Transaction [Line Items]
Accounts receivable	135	55
Accounts payable	5,093	2,845
Keylink
Related Party Transaction [Line Items]
Accounts receivable	6,620	4,112
Accounts payable	5,546	5,147
Nuvoton
Related Party Transaction [Line Items]
Accounts payable	$ 1,342	$ 1,477