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INVESTMENTS (Schedule of Derivative Instruments at Fair Value) (Details) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2014 Structured Deposit [Member] CNY | Dec. 31, 2014 Structured Deposit [Member] USD ($)
Investment Holdings [Line Items] |  |  |  |  |  |
Original costs | $ 11,492 us-gaap_PaymentsForProceedsFromShortTermInvestments | 71,306 us-gaap_PaymentsForProceedsFromShortTermInvestments |  | (4,000)us-gaap_PaymentsForProceedsFromShortTermInvestments | 71,306 us-gaap_PaymentsForProceedsFromShortTermInvestments / us-gaap_InvestmentTypeAxis = wbai_StructuredDepositMember |
Gross unrealized gains |  |  |  |  |  |
Gross unrealized losses |  |  |  |  | (1,124)wbai_UnrealizedLossOnShortTermInvestment / us-gaap_InvestmentTypeAxis = wbai_StructuredDepositMember |
Provision for decline in value |  |  |  |  |  |
Fair value of investments | 11,311 us-gaap_ShortTermInvestments | 70,182 us-gaap_ShortTermInvestments |  |  | 70,182 us-gaap_ShortTermInvestments / us-gaap_InvestmentTypeAxis = wbai_StructuredDepositMember | 11,311 us-gaap_ShortTermInvestments / us-gaap_InvestmentTypeAxis = wbai_StructuredDepositMember
Changes in fair value of the structured deposit | $ (181)wbai_UnrealizedGainLossOnChangeInFairValueOfShortTermInvestment | (1,124)wbai_UnrealizedGainLossOnChangeInFairValueOfShortTermInvestment |  |  |  |

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- Definition The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph g -Article 7 + Details
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- Definition Amount of gain (loss) from the increase (decrease) in fair value of short-term investment recognized in the income statement. + References No definition available. + Details
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