v2.4.1.9
INCOME TAXES (Details 1)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
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 (33.90%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome (28.10%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome
Foreign tax differential 0.30%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (1.80%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Change in valuation allowance 3.40%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (8.50%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Intercompany elimination 0.00%deyu_EffectiveIncomeTaxRateReconciliationInterCompanyElimination 2.00%deyu_EffectiveIncomeTaxRateReconciliationInterCompanyElimination
Other (6.90%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Income tax expense (3.00%)us-gaap_EffectiveIncomeTaxRateContinuingOperations (2.30%)us-gaap_EffectiveIncomeTaxRateContinuingOperations