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SUBSEQUENT EVENTS (Details) | 1 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended |  | 0 Months Ended
--- | --- | --- | --- | --- | --- | ---
Feb. 28, 2015 USD ($) | May 30, 2014 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2014 Scenario, Previously Reported [Member] USD ($) | Dec. 31, 2014 Employee Stock Option [Member] USD ($) | Dec. 31, 2013 Employee Stock Option [Member] | Dec. 31, 2012 Employee Stock Option [Member] | Jan. 28, 2014 Independent Directors [Member] Employee Stock Option [Member] | Jan. 28, 2014 Relevant Employees and Executive Officers [Member] Employee Stock Option [Member] | Jan. 12, 2015 Subsequent Event [Member] USD ($) | Feb. 28, 2015 Subsequent Event [Member] USD ($) | Jan. 31, 2015 Subsequent Event [Member] Pingan Bank [Member] USD ($) | Jan. 31, 2015 Subsequent Event [Member] Pingan Bank [Member] CNY | Jan. 12, 2015 Subsequent Event [Member] Employee Stock Option [Member] | Jan. 12, 2015 Subsequent Event [Member] Independent Directors [Member] Employee Stock Option [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted |  |  |  |  |  |  | 6,274,166 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 140,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 1,190,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 566,666 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = dq_IndependentDirectorsMember | 5,707,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = dq_RelevantEmployeesAndExecutiveOfficersMember | 6,274,166 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  | 6,534,375 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember | 600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_TitleOfIndividualAxis = dq_IndependentDirectorsMember
Exercise price of options granted |  |  |  |  |  | $ 1.49 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember | $ 1.49 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  | $ 0.87 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  |  |
America depositary shares (ADSs) issued, shares |  | 2,000,000 dq_DepositarySharesIssuedDuringPeriodShares |  |  |  |  |  |  |  |  |  |  | 1,540,000 dq_DepositarySharesIssuedDuringPeriodShares / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  |
Follow-on equity offering, net of issuance costs, shares |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther |  |  |  |  |  |  |  |  |  |  | 38,500,000 us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  |
Issuance cost for ordinary shares |  | $ (3,400,000)us-gaap_PaymentsOfStockIssuanceCosts | $ (3,375,553)us-gaap_PaymentsOfStockIssuanceCosts |  |  |  |  |  |  |  |  |  | $ (2,100,000)us-gaap_PaymentsOfStockIssuanceCosts / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  |
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 |  |  |  |  |  |  |  |  |  | 28,000,000 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |  |
Maximum borrowing amount of credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  | 32,200,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = dq_PinganBankMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember | 200,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = dq_PinganBankMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Amount guaranteed by the Company |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,500,000 us-gaap_GuaranteeObligationsCurrentCarryingValue / us-gaap_LineOfCreditFacilityAxis = dq_PinganBankMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember | 40,000,000 us-gaap_GuaranteeObligationsCurrentCarryingValue / us-gaap_LineOfCreditFacilityAxis = dq_PinganBankMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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