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SEGMENT INFORMATION, Segment Contribution (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Contribution [Abstract]
Operating income	$ 46,262	$ 8,149
Other income (expense)	(4,567)	(2,863)
Income before provision for income taxes	41,695	5,286
Operating Segment [Member]
Segment Contribution [Abstract]
Operating income	103,315	86,035
Operating Segment [Member] | Mainland China [Member]
Segment Contribution [Abstract]
Operating income	35,427	18,301
Operating Segment [Member] | South Korea [Member]
Segment Contribution [Abstract]
Operating income	24,512	24,057
Operating Segment [Member] | South Asia Pacific [Member]
Segment Contribution [Abstract]
Operating income	13,980	12,453
Operating Segment [Member] | Americas [Member]
Segment Contribution [Abstract]
Operating income	10,096	10,472
Operating Segment [Member] | Japan [Member]
Segment Contribution [Abstract]
Operating income	12,426	12,047
Operating Segment [Member] | Hong Kong/Taiwan [Member]
Segment Contribution [Abstract]
Operating income	5,083	8,358
Operating Segment [Member] | EMEA [Member]
Segment Contribution [Abstract]
Operating income	1,791	347
Segment Reconciling Item [Member]
Segment Contribution [Abstract]
Other income (expense)	(4,567)	(2,863)
Segment Reconciling Item [Member] | Corporate and Other [Member]
Segment Contribution [Abstract]
Operating income	$ (57,053)	$ (77,886)

X

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(10))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
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