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MAJOR CUSTOMERS | 12 Months Ended
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Dec. 31, 2011
MAJOR CUSTOMERS | 13. MAJOR CUSTOMERS Two customers accounted for 37% and 35% of sales during the year ended December 31, 2011. Three customers accounted for 45%, 26% and 12% of sales during the year ended December 31, 2010.

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- Definition Revenue by Major Customers by Reporting Segments [Text Block] + References No definition available. + Details
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Namespace Prefix: | creg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration