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NONCONTROLLING INTEREST (Narrative) (Details) | 0 Months Ended | 1 Months Ended |  | 1 Months Ended |  |
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Jun. 15, 2013 Erdos Metallurgy [Member] USD ($) | Jun. 15, 2013 Erdos Metallurgy [Member] CNY | Jul. 31, 2013 Erdos Metallurgy [Member] USD ($) | Jul. 31, 2013 Erdos Metallurgy [Member] CNY | Aug. 31, 2013 Erdos Metallurgy [Member] Noncontrolling Interest [Member] USD ($) | Jun. 15, 2013 ErdosTCH [Member] USD ($) | Jun. 15, 2013 ErdosTCH [Member] CNY | Jul. 31, 2013 Xi'an TCH [Member] | Jul. 15, 2013 Xi'an TCH [Member] USD ($) | Jul. 15, 2013 Xi'an TCH [Member] CNY | Jul. 15, 2013 Investment Center [Member] | Jun. 15, 2013 Erdos Tch Energy Saving Development Co Ltd [Member] USD ($) | Jun. 15, 2013 Erdos Tch Energy Saving Development Co Ltd [Member] CNY | Jun. 15, 2013 Xian Tch Energy Tech Co Ltd [Member] USD ($) | Jun. 15, 2013 Xian Tch Energy Tech Co Ltd [Member] CNY
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total registered capital |  |  |  |  |  | $ 17,550,000 creg_RegisteredCapital / dei_LegalEntityAxis = creg_ErdostchMember | 120,000,000 creg_RegisteredCapital / dei_LegalEntityAxis = creg_ErdostchMember |  |  |  |  |  |  |  |
Profit distribution percentage | 20.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ErdosMetallurgyMember | 20.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ErdosMetallurgyMember |  |  | 20.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ErdosMetallurgyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |  |  |  |  |  |  |  |  |
Contributed in capital |  |  |  |  |  |  |  |  |  |  |  | 1,290,000 creg_ContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = creg_ErdosTchEnergySavingDevelopmentCoLtdMember | 8,000,000 creg_ContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = creg_ErdosTchEnergySavingDevelopmentCoLtdMember | 16,370,000 creg_ContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = creg_XianTchEnergyTechCoLtdMember | 112,000,000 creg_ContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = creg_XianTchEnergyTechCoLtdMember
Minority interest decrease from redemptions | 1,290,000 us-gaap_MinorityInterestDecreaseFromRedemptions / dei_LegalEntityAxis = creg_ErdosMetallurgyMember | 8,000,000 us-gaap_MinorityInterestDecreaseFromRedemptions / dei_LegalEntityAxis = creg_ErdosMetallurgyMember | 1,290,000 us-gaap_MinorityInterestDecreaseFromRedemptions / dei_LegalEntityAxis = creg_ErdosMetallurgyMember | 8,000,000 us-gaap_MinorityInterestDecreaseFromRedemptions / dei_LegalEntityAxis = creg_ErdosMetallurgyMember |  |  |  |  |  |  |  |  |  |  |
Minority interest ownership percentage by noncontrolling owners |  |  |  |  |  | 7.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = creg_ErdostchMember | 7.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = creg_ErdostchMember |  |  |  |  |  |  |  |
Retained earnings accumulated deficit |  |  |  |  | 226,000 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = creg_ErdosMetallurgyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |  |  |  |  |  |  |  |  |
Capital |  |  |  |  |  |  |  |  | 4,880,000 us-gaap_Capital / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember | 30,000,000 us-gaap_Capital / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  | $ 4,370,000 us-gaap_EquityMethodInvestments / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember | 27,000,000 us-gaap_EquityMethodInvestments / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 100.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = creg_ErdostchMember | 100.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = creg_ErdostchMember |  | 90.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember | 90.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = creg_XiantChenergyTechColtdMemberMember | 10.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = creg_InvestmentCenterMember |  |  |  |
Indirect Ownership Percentage Details |  |  |  |  |  |  |  | HYREF Fund was 16.3% owned by Xian TCH and 1.1% owned by the Fund Management Company, and the Fund Management Company was 40% owned by Xian TCH as described in Note 12, which resulted in an additional indirect ownership of Xian TCH in Zhonghong of 1.7% |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  |  |  |  | 8.30%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = creg_InvestmentCenterMember |  |  |  |

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