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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) | Total | Ordinary shares [Member] | Treasury stock [Member] | Additional paid in capital [Member] | Accumulated Loss [Member] | Accumulated other comprehensive income [Member] | Noncontrolling interest [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ 452,026,227 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 17,571 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  | $ 142,511,581 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 150,204,956 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 18,444,123 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 140,847,996 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance, shares at Dec. 31, 2011 |  | 175,714,103 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Net (loss) income | (115,637,415)us-gaap_ProfitLoss |  |  |  | (111,928,941)us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (3,708,474)us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Other comprehensive income | 3,838,790 us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | 2,206,182 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,632,608 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Share-based compensation | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 2,249,834 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock Repurchases | (500,724)us-gaap_TreasuryStockValueAcquiredParValueMethod | (283)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | (494,928)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | (5,513)us-gaap_TreasuryStockValueAcquiredParValueMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock Repurchases, shares |  | (2,836,670)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Disposal of Nanjing Daqo New Energy Co., Ltd | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses |  |  |  |  | (1,099,299)us-gaap_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTranslationGainsLosses / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Balance at Dec. 31, 2012 | 340,877,413 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 17,288 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | (494,928)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 144,755,902 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 38,276,015 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 19,551,006 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 138,772,130 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance, shares at Dec. 31, 2012 |  | 172,877,433 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Net (loss) income | (221,090,508)us-gaap_ProfitLoss |  |  |  | (70,943,484)us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (150,147,024)us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Other comprehensive income | 5,543,033 us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | 4,148,190 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,394,843 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Share-based compensation | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 1,881,401 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Deconsolidation of Daqo New Material Co., Ltd. | 9,980,051 us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation |  |  |  |  |  | 9,980,051 us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Options Exercised | 135,171 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 55 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | 96,256 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 38,860 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Options Exercised, shares |  | 550,420 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Balance at Dec. 31, 2013 | 137,326,561 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 17,343 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 146,676,163 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (32,667,469)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 23,699,196 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Balance, shares at Dec. 31, 2013 |  | 173,427,853 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Net (loss) income | 16,649,176 us-gaap_ProfitLoss |  |  |  | 16,649,176 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Other comprehensive income | (3,662,013)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | (3,662,013)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Share-based compensation | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 1,792,819 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Follow-on equity offering, net of issuance costs | 54,624,447 us-gaap_StockIssuedDuringPeriodValueOther | 5,000 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  | 54,619,447 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Follow-on equity offering, net of issuance costs, shares |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Options Exercised | 37,080 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 15 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  | 37,065 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Options Exercised, shares |  | 150,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |
Balance at Dec. 31, 2014 | $ 206,768,070 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 22,358 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember | $ (398,672)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ 203,125,494 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (16,018,293)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 20,037,183 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Balance, shares at Dec. 31, 2014 |  | 223,577,853 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = dq_CommonStockOutstandingMember |  |  |  |  |

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