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Income Taxes (Details Textual) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Income Tax [Line Items] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 129.00% | 12.00% | 289.00% | 171.00%
Tax Year 2014 [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total |  |  |  | 34.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent |  |  |  | 39.00%
CREE Tax [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total |  |  | 9.00% |
Income Tax [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total |  |  | 25.00% |

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