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INCOME TAXES (Details)
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
U.S. expected federal income tax benefit 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
U.S. state, local tax net of federal benefit 10.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 10.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 10.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 10.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
U.S. permanent difference (0.20%)sino_EffectiveIncomeTaxRateReconciliationDomesticPermanentDifferential (1.20%)sino_EffectiveIncomeTaxRateReconciliationDomesticPermanentDifferential (0.20%)sino_EffectiveIncomeTaxRateReconciliationDomesticPermanentDifferential (0.80%)sino_EffectiveIncomeTaxRateReconciliationDomesticPermanentDifferential
U.S. temporary difference (45.70%)sino_EffectiveIncomeTaxRateReconciliationDomesticTemporaryDifferential (44.70%)sino_EffectiveIncomeTaxRateReconciliationDomesticTemporaryDifferential (45.70%)sino_EffectiveIncomeTaxRateReconciliationDomesticTemporaryDifferential (45.10%)sino_EffectiveIncomeTaxRateReconciliationDomesticTemporaryDifferential
Permanent difference related to other countries 11.40%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 1.40%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 21.90%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 3.10%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Hong Kong statutory income tax rate (16.50%)sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercent (16.50%)sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercent (16.50%)sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercent (16.50%)sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercent
Hong Kong income tax benefit 16.50%sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercentage 16.50%sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercentage 12.10%sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercentage 16.50%sino_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRatePercentage
Total tax expense 11.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 1.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 17.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations 3.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations