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VARIABLE INTEREST ENTITY (Details) (USD $)	3 Months Ended	12 Months Ended
	Apr. 14, 2014	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Variable Interest Entity [Line Items]
Revenues		$ 182,571,852us-gaap_Revenues		$ 108,999,805us-gaap_Revenues		$ 86,858,401us-gaap_Revenues
Net income (loss)		16,649,176us-gaap_NetIncomeLoss		(70,943,484)us-gaap_NetIncomeLoss		(111,928,941)us-gaap_NetIncomeLoss
Variable Interest Entity Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Revenues			[1]		[1]	10,743,336us-gaap_Revenues / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Operating costs and expenses			[1]	150,147,024us-gaap_OperatingCostsAndExpenses / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember		14,451,810us-gaap_OperatingCostsAndExpenses / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Net income (loss)			[1]	(150,147,024)us-gaap_NetIncomeLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember		(3,708,474)us-gaap_NetIncomeLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Lease term	3 years
Annual rental payment	$ 1,000,000dq_LesseeLeasingArrangementsOperatingLeasesAnnualPayment / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
[1] The lease term was amended at the beginning of 2013 and reduced the rent to $0 per month and was later terminated on December 30, 2013.

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- Definition

Lessee Leasing Arrangements, Operating Leases, Annual Payment.

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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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