Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED COMPENSATION (Details 2)

v2.4.1.9
STOCK BASED COMPENSATION (Details 2) (USD $)
 3 Months Ended
Mar. 31, 2015
Number of warrants outstanding 750,000us-gaap_ClassOfWarrantOrRightOutstanding
Exercise Price $ 2.10  
Number of warrants outstanding 250,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceMember
Exercise Price $ 2.10invest_InvestmentWarrantsExercisePrice
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceMember
Expiration Date May 21, 2018
Exercise Price $ 1.40  
Number of warrants outstanding 250,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceOneMember
Exercise Price $ 1.40invest_InvestmentWarrantsExercisePrice
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceOneMember
Expiration Date May 21, 2018
Exercise Price $ 2.10  
Number of warrants outstanding 125,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceTwoMember
Exercise Price $ 2.10invest_InvestmentWarrantsExercisePrice
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceTwoMember
Expiration Date Jul. 26, 2018
Exercise Price $ 1.40  
Number of warrants outstanding 125,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceThreeMember
Exercise Price $ 1.40invest_InvestmentWarrantsExercisePrice
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= nssi_ExercisePriceThreeMember
Expiration Date Jul. 26, 2018