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RELATED PARTY TRANSACTIONS AND BALANCES (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Sep. 28, 2012
Related Party Transaction [Line Items]        
Sales $ 19,150,112us-gaap_RevenueFromRelatedParties $ 13,471,866us-gaap_RevenueFromRelatedParties $ 2,799,427us-gaap_RevenueFromRelatedParties  
Interest expense       40,611us-gaap_InterestExpenseRelatedParty  
Related party balances:        
Amount due from related parties 9,986,968us-gaap_DueFromRelatedPartiesCurrent 13,416,452us-gaap_DueFromRelatedPartiesCurrent    
Change in amount due from related parties (2,193,604)us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent 6,853,965us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent (8,418,601)us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent  
Amount due to related party 89,698,151us-gaap_DueToRelatedPartiesCurrent 88,537,790us-gaap_DueToRelatedPartiesCurrent    
Disposition of Subsidiary [Member]        
Related Party Transaction [Line Items]        
Other transactions       9,888,742us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_DispositionOfSubsidiaryMember
 
Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 7,201,424us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
157,742us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
8,052,089us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
 
Prepayment Received [Member]        
Related Party Transaction [Line Items]        
Other transactions    [1]    [1] 15,852,593us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PrepaymentReceivedMember
[1]  
Purchases of Raw Materials [Member]        
Related Party Transaction [Line Items]        
Purchases       5,282us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfRawMaterialsMember
 
Rental Expenses [Member]        
Related Party Transaction [Line Items]        
Expense 1,071,287us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_RentalExpensesMember
       
Cash Proceeds from Transactions [Member]        
Related Party Transaction [Line Items]        
Other transactions 275,134,122us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_CashProceedsFromTransactionsMember
136,084,140us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_CashProceedsFromTransactionsMember
1,584,820us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_CashProceedsFromTransactionsMember
 
Cash Payments for Transactions [Member]        
Related Party Transaction [Line Items]        
Other transactions 275,088,560us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_CashPaymentsForTransactionsMember
69,386,568us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_CashPaymentsForTransactionsMember
    
Daqo Group [Member]        
Related party balances:        
Amount due from related parties 5,110,085us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
6,465,561us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
   
Amount due to related party 1,339,128us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
461,796us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
   
Daqo Group [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 10,821,462us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
813,105us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
    
Daqo Group [Member] | Repayment of Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 8,115,813us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
813,105us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
    
Daqo Group [Member] | Disposition of Subsidiary [Member]        
Related Party Transaction [Line Items]        
Other transactions       9,888,742us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_DispositionOfSubsidiaryMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
 
Daqo Group [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases       7,849,533us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoGroupMember
 
Zhengjiang Daqo Solar Co. Ltd [Member]        
Related Party Transaction [Line Items]        
Sales 9,554,320us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
13,471,866us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
2,799,428us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
 
Related party balances:        
Amount due from related parties 4,551,846us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
6,898,980us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
   
Amount due to related party 61,144us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
     
Zhengjiang Daqo Solar Co. Ltd [Member] | Daqo Group [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhengjiangDaqoSolarCoLtdMember
     
Daqo Solar Co Ltd [Member]        
Related Party Transaction [Line Items]        
Sales 9,595,680us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
       
Related party balances:        
Amount due to related party 54,275,617us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
66,750,009us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
   
Daqo Solar Co Ltd [Member] | Daqo Group [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
     
Daqo Solar Co Ltd [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 157,241,390us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
76,881,392us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
    
Daqo Solar Co Ltd [Member] | Repayment of Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 166,231,092us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
28,379,678us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
    
Daqo Solar Co Ltd [Member] | Prepayment Received [Member]        
Related Party Transaction [Line Items]        
Other transactions       13,497,973us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PrepaymentReceivedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoSolarCoLtdMember
 
Daqo Xinjiang Investment Co., Ltd. [Member]        
Related party balances:        
Amount due to related party 23,104,709us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
18,482,300us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
   
Daqo Xinjiang Investment Co., Ltd. [Member] | Daqo Group [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
     
Daqo Xinjiang Investment Co., Ltd. [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 98,367,234us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
58,389,643us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
    
Daqo Xinjiang Investment Co., Ltd. [Member] | Repayment of Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 93,219,846us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
40,193,785us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
    
Daqo Xinjiang Investment Co., Ltd. [Member] | Prepayment Received [Member]        
Related Party Transaction [Line Items]        
Other transactions       2,354,620us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PrepaymentReceivedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoXinjiangInvestmentCoLtdMember
 
Daqo New Material [Member]        
Related party balances:        
Amount due to related party 4,950,746us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
449,988us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
   
Daqo New Material [Member] | Daqo Group [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
     
Daqo New Material [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 7,729,501us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
       
Daqo New Material [Member] | Repayment of Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 4,600,117us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
       
Daqo New Material [Member] | Rental Expenses [Member]        
Related Party Transaction [Line Items]        
Other transactions 1,071,287us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_RentalExpensesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoNewMaterialMember
       
Chongqing Daqo Tailai [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ChongqingDaqoTailaiMember
     
Related party balances:        
Amount due to related party 1,755,326us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ChongqingDaqoTailaiMember
      
Chongqing Daqo Tailai [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 2,724,790us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ChongqingDaqoTailaiMember
     
Daqo Transformer [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoTransformerMember
     
Related party balances:        
Amount due to related party 1,595,659us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoTransformerMember
18,546us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoTransformerMember
   
Daqo Transformer [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 1,913,941us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoTransformerMember
     
Jiangsu Daqo [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_JiangsuDaqoMember
     
Related party balances:        
Amount due to related party 1,200,018us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_JiangsuDaqoMember
46,437us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_JiangsuDaqoMember
   
Jiangsu Daqo [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 1,165,346us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_JiangsuDaqoMember
     
Nanjing Daqo Electric [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoElectricMember
     
Related party balances:        
Amount due to related party 742,747us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoElectricMember
33,697us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoElectricMember
   
Nanjing Daqo Electric [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 763,856us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoElectricMember
     
Zhenjiang Klockner-Moeller Electrical Systems Co., Ltd [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhenjiangKlocknerMoellerElectricalSystemsCoLtdMember
     
Related party balances:        
Amount due to related party 310,395us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ZhenjiangKlocknerMoellerElectricalSystemsCoLtdMember
     
Nanjing Daqo [Member]        
Related Party Transaction [Line Items]        
Sales 112us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
   80,126us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
 
Interest expense       40,611us-gaap_InterestExpenseRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
 
Related party balances:        
Amount due to related party    1,651,810us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
   
Nanjing Daqo [Member] | Daqo Group [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
    100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= dq_DaqoGroupMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
Nanjing Daqo [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 973,898us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
       
Nanjing Daqo [Member] | Repayment of Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 2,921,693us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_PaymentsForFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
       
Nanjing Daqo [Member] | Loan Extended [Member]        
Related Party Transaction [Line Items]        
Other transactions       1,584,820us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_LoanExtendedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingDaqoMember
 
Other Subsidiaries of Daqo Group [Member]        
Related party balances:        
Amount due from related parties 325,037us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
51,911us-gaap_DueFromRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
   
Amount due to related party 734,201us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
[2] 643,207us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
[2]    
Other Subsidiaries of Daqo Group [Member] | Proceeds From Interest Free Loans [Member]        
Related Party Transaction [Line Items]        
Other transactions 636us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionAxis
= dq_ProceedsFromFinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
       
Other Subsidiaries of Daqo Group [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 6,714,476us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
[3] 157,742us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
[3] 202,556us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
[3]  
Other Subsidiaries of Daqo Group [Member] | Purchases of Raw Materials [Member]        
Related Party Transaction [Line Items]        
Purchases       5,282us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfRawMaterialsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_OtherSubsidiariesOfDaqoGroupMember
 
Nanjing Intelligent Apparatus Co., Ltd [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingIntelligentApparatusCoLtdMember
     
Related party balances:        
Amount due to related party 302,807us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingIntelligentApparatusCoLtdMember
     
Nanjing Intelligent Apparatus Co., Ltd [Member] | Purchases of Fixed Assets [Member]        
Related Party Transaction [Line Items]        
Purchases 146,543us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= dq_PurchasesOfFixedAssetsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingIntelligentApparatusCoLtdMember
     
Nanjing Intelligent Software Co., Ltd. [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingIntelligentSoftwareCoLtdMember
     
Related party balances:        
Amount due to related party 54,461us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_NanjingIntelligentSoftwareCoLtdMember
     
Daqo Investment Co., Ltd [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoInvestmentCoLtdMember
     
Related party balances:        
Amount due to related party 5,360us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_DaqoInvestmentCoLtdMember
     
Shanghai Sailfar Electric Technology Co., Ltd. [Member]        
Related Party Transaction [Line Items]        
Equity interest held 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ShanghaiSailfarElectricTechnologyCoLtdMember
     
Related party balances:        
Amount due to related party $ 34us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dq_ShanghaiSailfarElectricTechnologyCoLtdMember
     
[1] Prepayment has been considered a related party loan given there has been no deliveries since the prepayment was provided
[2] The remaining balance of amount due to related party of $734,201 as of December 31, 2014 was comprised of Zhenjiang Moeller, Intelligent Apparatus, Intelligent Software, Daqo Investment, Daqo Sailfar and Zhenjiang Daqo in the amount of $310,395, $302,807, $54,461, $5,360, $34, and $61,144, respectively.
[3] The transactions of $6,714,476 in 2014 were comprised of the purchase of fixed assets from Nanjing Daqo Electric, Nanjing Daqo Transformer, Jiangsu Daqo, Chongqing Daqo Tailai and Intelligence Apparatus in the amount of $763,856, $1,913,941, $1,165,346, $2,724,790 and $146,543, respectively.