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FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF CHANGES IN EQUITY) (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2015 | May 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | $ 137,326,561 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 340,877,413 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 452,026,227 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Net income (loss) |  |  | 16,649,176 us-gaap_NetIncomeLoss | (70,943,484)us-gaap_NetIncomeLoss | (111,928,941)us-gaap_NetIncomeLoss
Share-based compensation |  |  | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Options Exercised |  |  | 37,080 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 135,171 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |
Repurchase |  |  |  |  | (500,724)us-gaap_TreasuryStockValueAcquiredParValueMethod
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  | 9,980,051 us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses
Follow-on equity offering, net of issuance costs | 28,000,000 us-gaap_StockIssuedDuringPeriodValueOther | 54,600,000 us-gaap_StockIssuedDuringPeriodValueOther | 54,624,447 us-gaap_StockIssuedDuringPeriodValueOther |  |
Follow-on equity offering, net of issuance costs, shares |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther |  |  |
Balance |  |  | 206,768,070 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 137,326,561 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 340,877,413 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Ordinary shares [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 17,343 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,288 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,571 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Balance, shares |  |  | 173,427,853 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 172,877,433 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 175,714,103 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Share-based compensation |  |  |  |  |
Options Exercised |  |  | 15 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 55 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |
Options Exercised, shares |  |  | 150,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 550,420 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |
Repurchase |  |  |  |  | (283)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Repurchase, shares |  |  |  |  | (2,836,670)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  | 5,000 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |
Follow-on equity offering, net of issuance costs, shares |  |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |
Balance |  |  | 22,358 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,343 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,288 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Balance, shares |  |  | 223,577,853 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 173,427,853 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 172,877,433 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Treasury Stock [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (494,928)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  | 96,256 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
Repurchase |  |  |  |  | (494,928)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  |  |  |
Balance |  |  | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (494,928)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Additional paid in capital [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 146,676,163 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 144,755,902 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 142,511,581 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Share-based compensation |  |  | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Options Exercised |  |  | 37,065 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 38,860 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Repurchase |  |  |  |  | (5,513)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  | 54,619,447 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |
Balance |  |  | 203,125,494 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 146,676,163 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 144,755,902 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Retained earnings (accumulated losses) [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | (32,667,469)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 38,276,015 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 150,204,956 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  |  |
Repurchase |  |  |  |  |
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  |  |  |
Balance |  |  | (16,018,293)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (32,667,469)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 38,276,015 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Accumulated other comprehensive income [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 23,699,196 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 19,551,006 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 18,444,123 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  |  |
Repurchase |  |  |  |  |
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Follow-on equity offering, net of issuance costs |  |  |  |  |
Balance |  |  | 20,037,183 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 23,699,196 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 19,551,006 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Parent Company [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 137,326,561 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 202,105,283 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 311,178,231 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income (loss) |  |  | 16,649,176 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (70,943,484)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (111,928,941)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other comprehensive income |  |  | (3,662,013)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,148,190 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,206,182 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Share-based compensation |  |  | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Options Exercised |  |  | 37,080 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 135,171 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Repurchase |  |  |  |  | (500,724)us-gaap_TreasuryStockValueAcquiredParValueMethod / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Follow-on equity offering, net of issuance costs |  |  | 54,624,447 us-gaap_StockIssuedDuringPeriodValueOther / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Balance |  |  | 206,768,070 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 137,326,561 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 202,105,283 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Parent Company [Member] | Ordinary shares [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 17,343 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,288 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,571 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Balance, shares |  |  | 173,427,853 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 172,877,433 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 175,714,103 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Net income (loss) |  |  |  |  |
Other comprehensive income |  |  |  |  |
Share-based compensation |  |  |  |  |
Options Exercised |  |  | 15 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 55 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |
Options Exercised, shares |  |  | 150,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 550,420 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |
Repurchase |  |  |  |  | (283)us-gaap_TreasuryStockValueAcquiredParValueMethod / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Repurchase, shares |  |  |  |  | (2,836,670)us-gaap_TreasuryStockSharesAcquired / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  | 5,000 us-gaap_StockIssuedDuringPeriodValueOther / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |
Follow-on equity offering, net of issuance costs, shares |  |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |
Balance |  |  | 22,358 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,343 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 17,288 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Balance, shares |  |  | 223,577,853 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 173,427,853 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 172,877,433 us-gaap_SharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember
Parent Company [Member] | Treasury Stock [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (494,928)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
Net income (loss) |  |  |  |  |
Other comprehensive income |  |  |  |  |
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  | 96,256 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |
Repurchase |  |  |  |  | (494,928)us-gaap_TreasuryStockValueAcquiredParValueMethod / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Balance |  |  | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (494,928)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Parent Company [Member] | Additional paid in capital [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 146,676,163 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 144,755,902 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 142,511,581 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Net income (loss) |  |  |  |  |
Other comprehensive income |  |  |  |  |
Share-based compensation |  |  | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Options Exercised |  |  | 37,065 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 38,860 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |
Repurchase |  |  |  |  | (5,513)us-gaap_TreasuryStockValueAcquiredParValueMethod / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Follow-on equity offering, net of issuance costs |  |  | 54,619,447 us-gaap_StockIssuedDuringPeriodValueOther / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |
Balance |  |  | 203,125,494 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 146,676,163 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 144,755,902 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Parent Company [Member] | Retained earnings (accumulated losses) [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | (32,667,469)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 38,276,015 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 150,204,956 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Net income (loss) |  |  | 16,649,176 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (70,943,484)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (111,928,941)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Other comprehensive income |  |  |  |  |
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  |  |
Repurchase |  |  |  |  |
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  |
Balance |  |  | (16,018,293)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (32,667,469)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 38,276,015 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Parent Company [Member] | Accumulated other comprehensive income [Member] |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance |  |  | 23,699,196 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 19,551,006 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 18,444,123 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Net income (loss) |  |  |  |  |
Other comprehensive income |  |  | (3,662,013)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 4,148,190 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 2,206,182 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Share-based compensation |  |  |  |  |
Options Exercised |  |  |  |  |
Repurchase |  |  |  |  |
Deconsolidation of Daqo New Material Co., Ltd. |  |  |  |  |
Deconsolidation of Nanjing Daqo New Energy Co., Ltd |  |  |  |  | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance |  |  | $ 20,037,183 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 23,699,196 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 19,551,006 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember

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