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Income Taxes (Details 8) $ in Thousands	12 Months Ended
	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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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314

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-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
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