v2.4.1.9
INCOME TAXES (Details 1)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Taxes [Line Items]    
Expected U.S. income tax expense 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Increase (decrease) in taxes resulting from:    
Tax-exempt income (32.90%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome (33.00%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome
Foreign tax differential 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Change in valuation allowance 4.60%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Intercompany elimination 0.00%deyu_EffectiveIncomeTaxRateReconciliationInterCompanyElimination 0.00%deyu_EffectiveIncomeTaxRateReconciliationInterCompanyElimination
Other (3.50%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Income tax expense 2.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations