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RESTRICTED CASH (Narrative) (Details) (Bankers Acceptance [Member])	12 Months Ended
	Dec. 31, 2014
Bankers Acceptance [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Bank acceptance maturity period	6 months

X

- Definition

Debt Instrument Maturity Period.

+ References

No definition available.

+ Details

Name:	creg_DebtInstrumentMaturityPeriod
Namespace Prefix:	creg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration