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INCOME TAXES (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Expiration of net operating losses carried forward	Dec. 31, 2018
Xinjiang Daqo New Energy Co., Ltd. [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses carried forward, subject to expiration	109,398,425us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration / dei_LegalEntityAxis = dq_XinjiangDaqoNewEnergyCoLtdMember
Chongqing Daqo New Energy Co., Ltd. [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses carried forward	109,400,000us-gaap_OperatingLossCarryforwards / dei_LegalEntityAxis = dq_ChongqingDaqoNewEnergyCoLtdMember
Deferred tax assets	27,400,000us-gaap_DeferredTaxAssetsLiabilitiesNet / dei_LegalEntityAxis = dq_ChongqingDaqoNewEnergyCoLtdMember
Net operating losses carried forward, subject to expiration

X

- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

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