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

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