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ADVANCES FROM CUSTOMERS (Details)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2014
Customer A [Member]
USD ($)
Dec. 31, 2014
Customer A [Member]
CNY
Dec. 31, 2013
Customer A [Member]
USD ($)
Dec. 31, 2014
Customer G [Member]
USD ($)
Dec. 31, 2013
Customer G [Member]
USD ($)
Dec. 31, 2014
Customer H [Member]
USD ($)
Dec. 31, 2013
Customer H [Member]
USD ($)
Dec. 31, 2014
Others [Member]
USD ($)
Dec. 31, 2013
Others [Member]
USD ($)
Deferred Revenue Arrangement [Line Items]                      
Total $ 10,710,202us-gaap_CustomerAdvancesAndDeposits $ 25,141,896us-gaap_CustomerAdvancesAndDeposits $ 8,041,836us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_CustomerMember		 [1]   $ 15,987,573us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_CustomerMember		 [1] $ 2,405,619us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_CustomerGMember		 $ 4,220,355us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_CustomerGMember		    $ 2,996,550us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_CustomerHMember		 $ 262,747us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_OtherCustomersMember		 $ 1,937,418us-gaap_CustomerAdvancesAndDeposits
/ us-gaap_MajorCustomersAxis
= dq_OtherCustomersMember
Less: Current portion of advances from customers 7,308,535us-gaap_CustomerAdvancesCurrent 13,217,775us-gaap_CustomerAdvancesCurrent                  
Long term advances from customers 3,401,667us-gaap_CustomerAdvancesNoncurrent 11,924,121us-gaap_CustomerAdvancesNoncurrent                  
Supply commitment     $ 400,000us-gaap_SignificantSupplyCommitmentRemainingMinimumAmountCommitted
/ us-gaap_MajorCustomersAxis
= dq_CustomerMember		 2,400,000us-gaap_SignificantSupplyCommitmentRemainingMinimumAmountCommitted
/ us-gaap_MajorCustomersAxis
= dq_CustomerMember		              
[1] Pursuant to the terms of the Group's revised supply agreement with this customer the Group will deliver monthly amounts of polysilicon, totaling no less than RMB2.4 million (equivalent of $0.4 million) from April 2014 to September 2016, or until such time as the advance has been fully utilized.