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EXIT and DISPOSAL ACTIVITIES (Details)
 12 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2014
Wages [Member]
USD ($)
Dec. 31, 2014
Electricity fees [Member]
USD ($)
Dec. 31, 2014
Selling, general and administrative expenses [Member]
USD ($)
Dec. 31, 2013
Carrying Value [Member]
USD ($)
Dec. 31, 2014
Significant Production Assets [Member]
Carrying Value [Member]
USD ($)
Dec. 31, 2013
Significant Production Assets [Member]
Carrying Value [Member]
USD ($)
Sep. 28, 2012
Nanjing Daqo [Member]
USD ($)
Dec. 31, 2014
Nanjing Daqo [Member]
USD ($)
Dec. 31, 2013
Nanjing Daqo [Member]
USD ($)
Dec. 31, 2012
Nanjing Daqo [Member]
USD ($)
Sep. 28, 2012
Nanjing Daqo [Member]
CNY
Mar. 31, 2012
Nanjing Daqo [Member]
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Equity interest held                   100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		          
Total consideration received                   $ 9,900,000us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		       62,000,000us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		  
Total (loss) discontinued operations       (2,392,228)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax                   (2,392,228)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Gain on disposition       1,099,299us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax                   1,099,299us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Net assets                             12,000,000us-gaap_AssetsNet
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember
Reclassification of foreign currency translation gain from other comprehensive income     1,099,299us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses                   1,099,299us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Total cash consideration received                           4,778,657us-gaap_ProceedsFromDivestitureOfBusinesses
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Operating results reported as discontinued operations:                              
Revenues                         6,454,830us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Operating costs and expenses                         (9,946,357)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Loss from discontinued operations before income taxes                   (2,100,000)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		     (3,491,527)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Income tax benefit                               
Loss from discontinued operations                         (3,491,527)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= dq_NanjingDaqoMember		    
Restructuring Cost and Reserve [Line Items]                              
Carrying value of assets             307,942,362us-gaap_PropertyPlantAndEquipmentFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 116,100,000us-gaap_PropertyPlantAndEquipmentFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis
= dq_SignificantProductionAssetsMember		 144,700,000us-gaap_PropertyPlantAndEquipmentFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis
= dq_SignificantProductionAssetsMember		            
Impairment charge    158,424,827us-gaap_ImpairmentOfLongLivedAssetsHeldForUse 42,754,481us-gaap_ImpairmentOfLongLivedAssetsHeldForUse                        
Employee termination costs 800,000us-gaap_SeveranceCosts1                            
Carrying value of assets relocated               46,100,000dq_PropertyPlantAndEquipmentRelocated
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis
= dq_SignificantProductionAssetsMember		              
Carrying value of assets yet to be relocated               70,000,000dq_PropertyPlantAndEquipmentYetToBeRelocated
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis
= dq_SignificantProductionAssetsMember		              
Relocation costs 500,000us-gaap_BusinessExitCosts1         800,000us-gaap_BusinessExitCosts1
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember		                  
Expected relocation costs 2,300,000us-gaap_RestructuringAndRelatedCostExpectedCost1                            
Maintenance expenses $ 500,000us-gaap_RestructuringCharges     $ 300,000us-gaap_RestructuringCharges
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherExpenseMember		 $ 200,000us-gaap_RestructuringCharges
/ us-gaap_IncomeStatementLocationAxis
= dq_ElectricityFeesMember