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SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Details Narrative) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Econolite [Member] | Royalty Income[Member]      
Concentration Risk, Percentage 44.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= isns_RoyaltyIncomeMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
44.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= isns_RoyaltyIncomeMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
50.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= isns_RoyaltyIncomeMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
Econolite [Member] | Accounts Receivable [Member]      
Concentration Risk, Percentage   10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
 
Accounts receivable 1,500us-gaap_AccountsReceivableNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
1,600us-gaap_AccountsReceivableNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ dei_LegalEntityAxis
= isns_EconoliteMember
 
Two Customer [Member] | Accounts Receivable [Member]      
Concentration Risk, Percentage 42.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ dei_LegalEntityAxis
= isns_TwoCustomerMember