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Equity Method Investments (Tables) | 12 Months Ended
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Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of Equity Method Investments [Table Text Block] | As of December 31, 2014 and 2015, equity method investments consisted of the following:
|  | December 31, |
|  | 2014 |  | 2015 |
|  |  |  | Holding |  |  |  | Holding |
|  | Amount |  | % |  | Amount |  | % |
|  | (in thousands) |
Viewsil Microelectronics (Kunshan) Limited |  | $ | - |  |  | - |  |  | 3,629 |  |  | 49.00 |
Create Electronic Optical Co., Ltd. |  |  | 92 |  |  | 21.11 |  |  | - |  |  | - |
Iris (See Note 1) |  |  | 10 |  |  | 6.41 |  |  | 19 |  |  | 1.98 |
|  | $ | 102 |  |  |  |  |  | 3,648 |  |  |  |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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