XML 29 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Revenue $ 4,339us-gaap_Revenues $ 4,322us-gaap_Revenues  
Gross profit 3,320us-gaap_GrossProfit 3,117us-gaap_GrossProfit  
Amortization of intangible assets 381us-gaap_AmortizationOfIntangibleAssets 389us-gaap_AmortizationOfIntangibleAssets  
Intangible assets, net 3,570us-gaap_IntangibleAssetsNetExcludingGoodwill 6,085us-gaap_IntangibleAssetsNetExcludingGoodwill 3,987us-gaap_IntangibleAssetsNetExcludingGoodwill
Intersection [Member]      
Segment Reporting Information [Line Items]      
Revenue 2,161us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_IntersectionMember
2,183us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_IntersectionMember
 
Gross profit 2,060us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_IntersectionMember
2,105us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_IntersectionMember
 
Highway [Member]      
Segment Reporting Information [Line Items]      
Revenue 1,066us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
1,075us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
 
Gross profit 580us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
678us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
 
Amortization of intangible assets 122us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
122us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
 
Intangible assets, net 332us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
820us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isns_HighwayMember
 
LPR [Member]      
Segment Reporting Information [Line Items]      
Revenue 1,112us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
1,064us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
 
Gross profit 680us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
334us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
 
Amortization of intangible assets 259us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
267us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
 
Intangible assets, net $ 3,238us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember
$ 5,265us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isns_LprMember