SHARE BASED COMPENSATION (Schedule of Assumptions Used with Binomial Option Valuation Model) (Details) (Employee Stock Option [Member])	12 Months Ended
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%
Exercise multiple	2.8
Volatility rate	51.78%
Dividend yield	0.00%
Post-vesting forfeiture rate	3.00%
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%
Volatility rate		93.00%
Dividend yield		0.00%
Options Granted January 28, 2014 [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple		3.0
Post-vesting forfeiture rate		3.00%
Options Granted January 28, 2014 [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple		3.5
Post-vesting forfeiture rate		9.50%

Binomial Option Pricing Model, Exercise Multiple.

No definition available.

Name:	dq_BinomialOptionPricingModelExerciseMultiple
Namespace Prefix:	dq_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Binomial Option Pricing Model Post Vesting Forfeiture Rate.

+ References

No definition available.

+ Details

Name:	dq_BinomialOptionPricingModelPostVestingForfeitureRate
Namespace Prefix:	dq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration