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Income Taxes (Details 8) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($)
Operating Loss Carryforwards [Line Items] |
Tax effect | $ 34,341
Taiwan operations [Member] | Expiration Year 2017 To 2021 [Member] |
Operating Loss Carryforwards [Line Items] |
Deductible amount | 91,327
Tax effect | $ 15,525
Expiration year (in years) | 2017~2021
Taiwan operations [Member] | Expiration Year 2022 To 2026 [Member] |
Operating Loss Carryforwards [Line Items] |
Deductible amount | $ 87,642
Tax effect | $ 14,899
Expiration year (in years) | 2022~2026
Hong Kong Operations [Member] |
Operating Loss Carryforwards [Line Items] |
Deductible amount | $ 1,811
Tax effect | $ 299
Expiration year (in years) | Indefinitely
US operations [Member] |
Operating Loss Carryforwards [Line Items] |
Deductible amount | $ 9,204
Tax effect | $ 3,618
Expiration year (in years) | 2024~2036

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