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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 |  |

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