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SEGMENT INFORMATION, Depreciation and Amortization and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Summarized Financial Information [Abstract]
Depreciation and amortization	$ 21,235	$ 17,455	$ 40,142	$ 35,080
Capital expenditures	15,777	11,823	28,429	27,751
Other [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	13,976	9,521	25,542	18,996
Capital expenditures	14,090	9,737	23,805	23,005
Reportable Geographic Region [Member] | Mainland China [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	3,444	3,681	6,931	7,652
Capital expenditures	1,029	760	2,898	1,663
Reportable Geographic Region [Member] | Americas/Pacific [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	279	484	493	1,050
Capital expenditures	240	327	429	561
Reportable Geographic Region [Member] | South Korea [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	1,576	1,654	3,243	3,286
Capital expenditures	44	16	44	464
Reportable Geographic Region [Member] | Southeast Asia [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	564	550	1,123	1,077
Capital expenditures	144	333	195	533
Reportable Geographic Region [Member] | Japan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	900	899	1,815	1,779
Capital expenditures	72	21	383	97
Reportable Geographic Region [Member] | Hong Kong/Taiwan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	321	344	644	646
Capital expenditures	116	511	598	1,117
Reportable Geographic Region [Member] | EMEA [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	175	322	351	594
Capital expenditures	$ 42	$ 118	$ 77	$ 311

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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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