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SHARE BASED COMPENSATION (Schedule of Assumptions Used with Binomial Option Valuation Model) (Details) (Employee Stock Option [Member]) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2014
Options Granted April 3, 2013 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Average risk-free rate of return | 2.29%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardDateAxis = dq_OptionsGrantedApril3Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Exercise multiple | 2.8 dq_BinomialOptionPricingModelExerciseMultiple / us-gaap_AwardDateAxis = dq_OptionsGrantedApril3Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Volatility rate | 51.78%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardDateAxis = dq_OptionsGrantedApril3Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Dividend yield | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardDateAxis = dq_OptionsGrantedApril3Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Post-vesting forfeiture rate | 3.00%dq_BinomialOptionPricingModelPostVestingForfeitureRate / us-gaap_AwardDateAxis = dq_OptionsGrantedApril3Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
Options Granted January 28, 2014 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Average risk-free rate of return |  | 2.77%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Volatility rate |  | 93.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Dividend yield |  | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Options Granted January 28, 2014 [Member] | Minimum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise multiple |  | 3.0 dq_BinomialOptionPricingModelExerciseMultiple / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Post-vesting forfeiture rate |  | 3.00%dq_BinomialOptionPricingModelPostVestingForfeitureRate / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Options Granted January 28, 2014 [Member] | Maximum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise multiple |  | 3.5 dq_BinomialOptionPricingModelExerciseMultiple / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Post-vesting forfeiture rate |  | 9.50%dq_BinomialOptionPricingModelPostVestingForfeitureRate / us-gaap_AwardDateAxis = dq_OptionsGrantedJanuary28Member / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Binomial Option Pricing Model, Exercise Multiple. + References No definition available. + Details
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- Definition Binomial Option Pricing Model Post Vesting Forfeiture Rate. + References No definition available. + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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