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CONCENTRATION OF RISKS (Significance of Service Fees Received from Lottery Administration Centers) (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 CNY	Dec. 31, 2013 CNY	Dec. 31, 2012 CNY	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center A [Member] USD ($)	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center A [Member] CNY	Dec. 31, 2013 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center A [Member] CNY	Dec. 31, 2012 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center A [Member] CNY	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center B [Member] USD ($)	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center B [Member] CNY	Dec. 31, 2013 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center B [Member] CNY	Dec. 31, 2012 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center B [Member] CNY	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center C [Member] USD ($)	Dec. 31, 2014 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center C [Member] CNY	Dec. 31, 2013 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center C [Member] CNY	Dec. 31, 2012 Service Fees [Member] Concentration of suppliers [Member] Lottery administration center C [Member] CNY
Concentration Risk [Line Items]
Net revenue recognized from service fees	$ 93,434us-gaap_SalesRevenueServicesNet	579,717us-gaap_SalesRevenueServicesNet	259,534us-gaap_SalesRevenueServicesNet	171,527us-gaap_SalesRevenueServicesNet	$ 41,920us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenteraMember	260,096us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenteraMember	169,474us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenteraMember	111,533us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenteraMember	$ 32,000us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenterbMember	198,549us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenterbMember	75,212us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenterbMember	43,440us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCenterbMember	$ 19,603us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCentercMember	121,628us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCentercMember	45,231us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCentercMember	13,653us-gaap_SalesRevenueServicesNet / us-gaap_ConcentrationRiskByBenchmarkAxis = wbai_ServiceFeesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember / us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis = wbai_LotteryAdministrationCentercMember

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- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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