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INCOME TAX (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Effective income tax rate	23.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	30.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Net operating losses	$ 13.60us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Deferred tax assets, valuation allowance, percentage	100.00%creg_DeferredTaxAssetsValuationAllowancePercentage
Operating Income Loss Carryforwards Year	20 years
Foreign Retained Earnings Before Application Of Tax	27.30creg_ForeignRetainedEarningsBeforeApplicationOfTax	24.58creg_ForeignRetainedEarningsBeforeApplicationOfTax
Undistributed Earnings of Foreign Subsidiaries	104.21us-gaap_UndistributedEarningsOfForeignSubsidiaries
Federal income additional taxes	$ 20.10us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Shanghai TCH [Member]
Income Taxes [Line Items]
Effective income tax rate	25.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_ShanghaiTchEnergyTechnologyCoLtdMember	25.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_ShanghaiTchEnergyTechnologyCoLtdMember
Xian TCH [Member]
Income Taxes [Line Items]
Effective income tax rate		15.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_XianTchEnergyTechCoLtdMember
China [Member]
Income Taxes [Line Items]
Effective income tax rate	25.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_ChinaMember
Erdos TCH Zhonghong Huahong [Member]
Income Taxes [Line Items]
Effective income tax rate	25.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_ErdosTchZhonghongHuahongMember	25.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / creg_IncomeTaxRateAppliedAxis = creg_ErdosTchZhonghongHuahongMember

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