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SHARE-BASED PAYMENT (Summary of Share Option Activity and Related Information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Jun. 19, 2014 | Apr. 08, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 08, 2012
Number of option |  |  |  |  |  |
Outstanding, January 1, 2014 |  |  |  |  |  | 13,740,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Exercised | (22,742,660)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised |  |  |  |  |
Outstanding, December 31, 2014 |  |  |  |  |  | 13,740,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Employees and Directors [Member] |  |  |  |  |  |
Number of option |  |  |  |  |  |
Outstanding, January 1, 2014 | 18,719,980 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Granted | 34,561,800 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  | 13,864,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |
Exercised | (10,142,660)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Outstanding, December 31, 2014 | 43,139,120 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  | 18,719,980 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |
Vested and expected to vest at December 31, 2014 | 42,756,440 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Exercisable at December 31, 2014 | 7,238,210 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Weighted average exercise price |  |  |  |  |  |
Outstanding, January 1, 2014 | 0.28 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Granted | 3.23 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember | $ 3.232 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember | $ 0.40 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |
Exercised | 0.30 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Outstanding, December 31, 2014 | 2.64 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  | $ 0.28 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |
Vested and expected to vest at December 31, 2014 | 2.66 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Exercisable at December 31, 2014 | 0.54 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Weighted average grant date fair value per share |  |  |  |  |  |
Outstanding, January 1, 2014 | 0.43 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Granted | 1.35 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  | $ 0.95 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |
Exercised | 0.34 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Outstanding, December 31, 2014 | 1.19 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  | $ 0.43 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |
Vested and expected to vest at December 31, 2014 | 1.20 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Exercisable at December 31, 2014 | 0.62 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Weighted average remaining contractual year |  |  |  |  |  |
Outstanding | 4 years 4 months 24 days |  |  | 7 years 7 months 17 days |  |
Vested and expected to vest at December 31, 2014 | 4 years 4 months 17 days |  |  |  |  |
Exercisable at December 31, 2014 | 6 years 6 months 29 days |  |  |  |  |
Aggregated intrinsic value |  |  |  |  |  |
Outstanding, December 31, 2014 | 12,672 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Vested and expected to vest at December 31, 2014 | 12,085 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Exercisable at December 31, 2014 | 9,681 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 / us-gaap_TitleOfIndividualAxis = wbai_EmployeesAndDirectorsMember |  |  |  |  |
Consultants [Member] |  |  |  |  |  |
Number of option |  |  |  |  |  |
Outstanding, January 1, 2014 | 12,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Granted |  |  | 12,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |
Exercised | 12,600,000 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Outstanding, December 31, 2014 |  |  |  | 12,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |
Exercisable at December 31, 2014 |  |  |  |  |  |
Weighted average exercise price |  |  |  |  |  |
Outstanding, January 1, 2014 | 0.40 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Granted |  |  | $ 0.40 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |
Exercised | 0.40 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Outstanding, December 31, 2014 |  |  |  | $ 0.40 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |
Exercisable at December 31, 2014 |  |  |  |  |  |
Weighted average grant date fair value per share |  |  |  |  |  |
Outstanding, January 1, 2014 | 0.31 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Exercised | 0.31 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |  |  |  |
Outstanding, December 31, 2014 |  |  |  | $ 0.31 wbai_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = wbai_ConsultantsMember |  |
Exercisable at December 31, 2014 |  |  |  |  |  |
Weighted average remaining contractual year |  |  |  |  |  |
Outstanding |  |  |  | 7 years 3 months 7 days |  |
Exercisable at December 31, 2014 |  |  |  |  |  |
Aggregated intrinsic value |  |  |  |  |  |
Outstanding, December 31, 2014 |  |  |  |  |  |
Exercisable at December 31, 2014 |  |  |  |  |  |

X
- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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