v2.4.1.9
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]      
Advertising Expense $ 76,715us-gaap_AdvertisingExpense $ 30,185us-gaap_AdvertisingExpense  
Allowance for Doubtful Accounts Receivable 1,353,571us-gaap_AllowanceForDoubtfulAccountsReceivable   1,337,364us-gaap_AllowanceForDoubtfulAccountsReceivable
Inventory Valuation Reserves 140,709us-gaap_InventoryValuationReserves   140,582us-gaap_InventoryValuationReserves
Impairment of Long-Lived Assets Held-for-use 772,788us-gaap_ImpairmentOfLongLivedAssetsHeldForUse   772,091us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Finite-Lived Intangible Assets, Accumulated Impairment Loss $ 6,833,181deyu_FinitelivedIntangibleAssetsAccumulatedImpairmentLoss   $ 6,512,731deyu_FinitelivedIntangibleAssetsAccumulatedImpairmentLoss