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INCOME TAXES (Narrative Summary of Tax Rates) (Details) In Thousands, unless otherwise specified | 12 Months Ended | 1 Months Ended | 12 Months Ended
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Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2014 Hong Kong [Member] | Dec. 31, 2014 PRC [Member] | Dec. 31, 2014 PRC [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] Youlanguang Technology [Member] | Dec. 31, 2014 PRC [Member] E-Sun Network [Member] | Dec. 31, 2014 PRC [Member] E-Sun Sky Computer [Member] | Dec. 31, 2013 PRC [Member] E-Sun Sky Computer [Member] | Dec. 31, 2012 PRC [Member] E-Sun Sky Computer [Member] | Dec. 31, 2014 PRC [Member] Guangtiandi Technology [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2013 PRC [Member] Guangtiandi Technology [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2012 PRC [Member] Guangtiandi Technology [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] 500Fu [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] Baifengrun Technology [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] Lhasa Yicai [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] Key Software Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2013 PRC [Member] Key Software Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Oct. 31, 2011 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2014 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2013 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2012 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] | Dec. 31, 2016 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] Forecast [Member] | Dec. 31, 2015 PRC [Member] High-tech Enterprise [Member] E-Sun Sky Network [Member] Variable Interest Entity, Primary Beneficiary [Member] Forecast [Member] | Dec. 31, 2014 United States of America [Member] 500.com USA [Member] Variable Interest Entity, Primary Beneficiary [Member] USD ($)
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Statutory EIT rate on taxable income |  |  |  |  | 16.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_HK | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenYoulanguangScienceAndTechnologyCoLtdMember | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunNetworkCoLtdMember | 12.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_EsunSkyComputerShenzhenCoLtdMember | 12.50%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_EsunSkyComputerShenzhenCoLtdMember | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_EsunSkyComputerShenzhenCoLtdMember | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenGuangtiandiScienceAndTechnologyCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenGuangtiandiScienceAndTechnologyCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenGuangtiandiScienceAndTechnologyCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenWubaiZhifuCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_BeijingBaifengrunScienceAndTechnologyCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_LhasaYicaiNetworkTechnologyCoLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 10.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_KeySoftwareEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 10.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_KeySoftwareEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember | 15.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = country_CN / dei_LegalEntityAxis = wbai_ShenzhenEsunSkyNetworkTechnologyCoLtdMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TaxCreditCarryforwardAxis = wbai_HighTechEnterpriseMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember |
Provision for income tax | $ 1,287 us-gaap_IncomeTaxExpenseBenefit | 7,987 us-gaap_IncomeTaxExpenseBenefit | (76,294)us-gaap_IncomeTaxExpenseBenefit | 18,001 us-gaap_IncomeTaxExpenseBenefit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assessable income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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