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Shareholders' Equity (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2012
Dec. 31, 2013
Feb. 03, 2014
Jan. 31, 2014
Jun. 18, 2013
Nov. 27, 2014
Apr. 30, 2013
Class of Stock [Line Items]                
Issuance of ordinary shares $ 467us-gaap_StockIssuedDuringPeriodValueNewIssues              
Trading description For each Ordinary share purchased under the SEDA, YA will pay 95% of the lowest daily VWAP (as defined below) of the Ordinary shares during the five consecutive trading days following the date of an advance notice from the Company (provided such VWAP is greater than or equal to 90% of the last closing price of the Ordinary shares at the time of delivery of the advance notice). Once presented with an advance notice, YA Global is required to purchase the number of shares specified in the advance notice. Each such notice may be for an amount of Ordinary shares not to exceed the greater of (1) $25 and (2) the average of the Daily Value Traded for the five trading days prior to the advance notice, where Daily Value Traded is the product obtained by multiplying the daily trading volume for such day by the VWAP for such day. Notwithstanding the forgoing, the notice shall not exceed $150 for the 2013 SEDA and $500 for the 2014 SEDA.              
Stock Option [Member]                
Class of Stock [Line Items]                
Option term   10 years            
Ordinary shares reserved for purchase   275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
           
Options still available for future grants 80,005us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
             
Vesting period 4 years              
Stock option plan expiration date   May 31, 2023            
Weighted-average grant-date fair value of options granted $ 5.32us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
  $ 4.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Weighted-average grant-date fair value of unvested options $ 4.26us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
             
Total intrinsic value of options exercised     91us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Unrecognized compensation cost related to non-vested share-based compensation arrangements 182us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
  231us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Proceeds from exercise of options     86us-gaap_ProceedsFromStockOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Minimum [Member] | Stock Option [Member]                
Class of Stock [Line Items]                
Option term 2 years              
Maximum [Member] | Stock Option [Member]                
Class of Stock [Line Items]                
Option term 10 years              
YA Global Master SPV Ltd. [Member]                
Class of Stock [Line Items]                
Issuance of ordinary shares, shares 63,948us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
  43,834us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
         
Issuance of ordinary shares 600us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
  600us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
         
Ordinary shares issued for commitment fee 13,711bosc_CommonStockSharesIssuedForCommitmentFee
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
             
YA Global Master SPV Ltd. [Member] | Note Purchase Agreement [Member]                
Class of Stock [Line Items]                
Issuance of ordinary shares, shares       2,500us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_FinancialInstrumentAxis
= bosc_PurchaseAgreementMember
       
Bridge Loan       500us-gaap_BridgeLoan
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_FinancialInstrumentAxis
= bosc_PurchaseAgreementMember
       
Bridge loan expiration period       1 year        
Standby Equity Distribution Agreement [Member] | YA Global Master SPV Ltd. [Member]                
Class of Stock [Line Items]                
Issuance of ordinary shares, shares 290,254us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
             
Issuance of ordinary shares 958us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
    2,000us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
  600us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
   
Shares issued for services     7,500us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
         
Payments of stock issuance costs 42us-gaap_PaymentsOfStockIssuanceCosts
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
             
Number shares covered by warrants         161,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
    140,887us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
Warrant extension term         2 years      
Standby Equity Distribution Agreement [Member] | YA Global Master SPV Ltd. [Member] | Minimum [Member]                
Class of Stock [Line Items]                
Exercise price of warrants         7.43invest_InvestmentWarrantsExercisePrice
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
     
Standby Equity Distribution Agreement [Member] | YA Global Master SPV Ltd. [Member] | Maximum [Member]                
Class of Stock [Line Items]                
Exercise price of warrants         11invest_InvestmentWarrantsExercisePrice
/ us-gaap_CounterpartyNameAxis
= bosc_YaGlobalMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
     
Cukierman & Co [Member]                
Class of Stock [Line Items]                
Shares issued for services 17,747us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
  20,932us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
         
Edouard Cukierman [Member]                
Class of Stock [Line Items]                
Shares issued for services 17,079us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
  7,787us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
         
THCAP [Member]                
Class of Stock [Line Items]                
Shares issued for services 6,004us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
  9,868us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
         
Number shares covered by warrants   3,600us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
           
Term of warrants   3 years            
Exercise price of warrants   2.39invest_InvestmentWarrantsExercisePrice
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
           
THCAP [Member] | Director Fees [Member]                
Class of Stock [Line Items]                
Shares issued for services 2,405us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionAxis
= bosc_DirectorFeesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
  1,219us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionAxis
= bosc_DirectorFeesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_ThcapMember
         
Director [Member]                
Class of Stock [Line Items]                
Shares issued for services 2,652us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
             
Novel Infrastructure, Ltd. [Member] | Share Purchase Agreement [Member]                
Class of Stock [Line Items]                
Issuance of ordinary shares, shares             128,147us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_FinancialInstrumentAxis
= bosc_PurchaseAgreementOneMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_NovelInfrastructureMember
 
Issuance of ordinary shares             500us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_FinancialInstrumentAxis
= bosc_PurchaseAgreementOneMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_NovelInfrastructureMember
 
Payments of stock issuance costs             $ 33us-gaap_PaymentsOfStockIssuanceCosts
/ us-gaap_FinancialInstrumentAxis
= bosc_PurchaseAgreementOneMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= bosc_NovelInfrastructureMember