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Equity Method Investments (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]      
Gain on disposal of equity method investment $ 88 $ 0 $ 54
Investor Level Goodwill 1,897    
Viewsil Microelectronics Kunshan Limited [Member]      
Schedule of Equity Method Investments [Line Items]      
Equity In Losses Of Equity Method Investee $ 71