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Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Effective Income Tax Rate Reconciliation, Percent	(47.10%)	84.70%	121.00%	545.00%
Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2015 [Member]
Effective Income Tax Rate Reconciliation, Percent			39.00%
Tax Year 2015 [Member] | Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
Tax Year 2015 [Member] | CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2015 [Member] | CREE Surtax [Member]
Effective Income Tax Rate Reconciliation, Percent			5.00%
Tax Year 2016 [Member]
Effective Income Tax Rate Reconciliation, Percent			40.00%
Tax Year 2016 [Member] | Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
Tax Year 2016 [Member] | CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2016 [Member] | CREE Surtax [Member]
Effective Income Tax Rate Reconciliation, Percent			6.00%
Tax Year 2017 [Member]
Effective Income Tax Rate Reconciliation, Percent			42.00%
Tax Year 2017 [Member] | Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
Tax Year 2017 [Member] | CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2017 [Member] | CREE Surtax [Member]
Effective Income Tax Rate Reconciliation, Percent			8.00%
Tax Year 2018 [Member]
Effective Income Tax Rate Reconciliation, Percent			43.00%
Tax Year 2018 [Member] | Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
Tax Year 2018 [Member] | CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2018 [Member] | CREE Surtax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2019 [Member]
Effective Income Tax Rate Reconciliation, Percent			34.00%
Tax Year 2019 [Member] | Income Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			25.00%
Tax Year 2019 [Member] | CREE Tax [Member]
Effective Income Tax Rate Reconciliation, Percent			9.00%
Tax Year 2019 [Member] | CREE Surtax [Member]
Effective Income Tax Rate Reconciliation, Percent			0.00%

X

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



-SubTopic 10



-Section 50



-Paragraph 13



-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 235



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.4-08.(h)(2))



-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



-SubTopic 10



-Section 50



-Paragraph 12



-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

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