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SEGMENT INFORMATION, Depreciation and Amortization and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Summarized Financial Information [Abstract]
Depreciation and amortization	$ 18,907	$ 17,625
Capital expenditures	12,652	15,928
Other [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	11,566	9,475
Capital expenditures	9,715	13,268
Reportable Geographic Region [Member] | Mainland China [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	3,487	3,971
Capital expenditures	1,869	903
Reportable Geographic Region [Member] | Americas/Pacific [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	214	566
Capital expenditures	189	234
Reportable Geographic Region [Member] | South Korea [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	1,667	1,632
Capital expenditures	0	448
Reportable Geographic Region [Member] | Southeast Asia [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	559	527
Capital expenditures	51	200
Reportable Geographic Region [Member] | Japan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	915	880
Capital expenditures	311	76
Reportable Geographic Region [Member] | EMEA [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	176	272
Capital expenditures	35	193
Reportable Geographic Region [Member] | Hong Kong/Taiwan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	323	302
Capital expenditures	$ 482	$ 606

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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