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FOLLOW-ON EQUITY OFFERING (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2015 | May 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
FOLLOW-ON EQUITY OFFERING [Abstract] |  |  |  |  |
America depositary shares (ADSs) issued, shares |  | 2,000,000 dq_DepositarySharesIssuedDuringPeriodShares |  |  |
Follow-on equity offering, net of issuance costs, shares |  | 50,000,000 us-gaap_StockIssuedDuringPeriodSharesOther |  |  |
Issuance cost for ordinary shares |  | $ (3,400,000)us-gaap_PaymentsOfStockIssuanceCosts | $ (3,375,553)us-gaap_PaymentsOfStockIssuanceCosts |  |
Follow-on equity offering, net of issuance costs | $ 28,000,000 us-gaap_StockIssuedDuringPeriodValueOther | $ 54,600,000 us-gaap_StockIssuedDuringPeriodValueOther | $ 54,624,447 us-gaap_StockIssuedDuringPeriodValueOther |  |

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- Definition Number of depositary shares issued during the period. + References No definition available. + Details
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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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