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STATUTORY RESERVES (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2014
Statutory Surplus Reserve Fund [Member] |
Subsidiary or Equity Method Investee [Line Items] |
Percentage of income transferred to retained earnings appropriated for legal reserve | 10.00%creg_PercentageOfIncomeTransferredToRetainedEarningsAppropriatedForLegalReserve / us-gaap_ValuationAllowancesAndReservesTypeAxis = creg_StatutorySurplusReserveFundMember
Statutory Surplus Reserve Fund [Member] | Maximum [Member] |
Subsidiary or Equity Method Investee [Line Items] |
Statutory surplus reserve fund percentage | 50.00%creg_StatutorySurplusReserveFundPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationAllowancesAndReservesTypeAxis = creg_StatutorySurplusReserveFundMember
Statutory Surplus Reserve Fund [Member] | Minimum [Member] |
Subsidiary or Equity Method Investee [Line Items] |
Percentage of total remaining reserve | 25.00%creg_PercentageOfTotalRemainingReserve / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationAllowancesAndReservesTypeAxis = creg_StatutorySurplusReserveFundMember
Common Welfare Fund [Member] | Maximum [Member] |
Subsidiary or Equity Method Investee [Line Items] |
Percentage of income transferred to retained earnings appropriated for legal reserve | 10.00%creg_PercentageOfIncomeTransferredToRetainedEarningsAppropriatedForLegalReserve / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationAllowancesAndReservesTypeAxis = creg_CommonWelfareFundMember
Common Welfare Fund [Member] | Minimum [Member] |
Subsidiary or Equity Method Investee [Line Items] |
Percentage of income transferred to retained earnings appropriated for legal reserve | 5.00%creg_PercentageOfIncomeTransferredToRetainedEarningsAppropriatedForLegalReserve / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationAllowancesAndReservesTypeAxis = creg_CommonWelfareFundMember

X
- Definition Percentage Of Income Transferred To Retained Earnings Appropriated For Legal Reserve. + References No definition available. + Details
Name: | creg_PercentageOfIncomeTransferredToRetainedEarningsAppropriatedForLegalReserve
Namespace Prefix: | creg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Total Remaining Reserve. + References No definition available. + Details
Name: | creg_PercentageOfTotalRemainingReserve
Namespace Prefix: | creg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Statutory Surplus Reserve Fund Percentage. + References No definition available. + Details
Name: | creg_StatutorySurplusReserveFundPercentage
Namespace Prefix: | creg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsidiaryOrEquityMethodInvesteeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=creg_CommonWelfareFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=creg_StatutorySurplusReserveFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |