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BORROWINGS (Short-Term Borrowings) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Short-term credit bank borrowings	$ 90,443,007us-gaap_ShortTermBankLoansAndNotesPayable	$ 68,821,014us-gaap_ShortTermBankLoansAndNotesPayable
Interest rate on short-term bank borrowings	6.80%us-gaap_ShortTermDebtWeightedAverageInterestRate	6.40%us-gaap_ShortTermDebtWeightedAverageInterestRate
Bank Facilities [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity of credit line	8,500,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember	18,200,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember
Debt Guaranteed by Daqo Group and Mr. Guangfu Xu and Mr. Xinag Xu [Member]
Short-term Debt [Line Items]
Short-term credit bank borrowings	27,389,890us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_DebtGuaranteedByDaqoGroupAndMrGuangfuXuAndMrXinagXuMember	28,080,770us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_DebtGuaranteedByDaqoGroupAndMrGuangfuXuAndMrXinagXuMember
Debt Guaranteed by Daqo Group and Third Party [Member]
Short-term Debt [Line Items]
Short-term credit bank borrowings	11,278,190us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_DebtGuaranteedByDaqoGroupAndThirdPartyMember	11,562,670us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_DebtGuaranteedByDaqoGroupAndThirdPartyMember
Short-term Credit Borrowings [Member]
Short-term Debt [Line Items]
Short-term credit bank borrowings	$ 51,774,927us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_ShortTermCreditBorrowingsMember	$ 29,177,574us-gaap_ShortTermBankLoansAndNotesPayable / us-gaap_DebtInstrumentAxis = dq_ShortTermCreditBorrowingsMember

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount at the balance sheet date of borrowings from a bank, not elsewhere enumerated in the taxonomy, with a maturity within one year (or within one operating cycle if longer) from the date of borrowing.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_ShortTermBankLoansAndNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Definition

Weighted average interest rate of short-term debt outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph b

-Article 5

+ Details

Name:	us-gaap_ShortTermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentAxis=dq_DebtGuaranteedByDaqoGroupAndMrGuangfuXuAndMrXinagXuMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=dq_DebtGuaranteedByDaqoGroupAndThirdPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=dq_ShortTermCreditBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: