Annual report pursuant to Section 13 and 15(d)

OTHER INVESTMENTS AT COST (Details)

v2.4.1.9
OTHER INVESTMENTS AT COST (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Other Investments At Cost Tables    
Common Stock , Shares 250,000nssi_CommonStockShares  
Common Stock , Carrying Value $ 76,000nssi_CommonStockCarryingValue $ 76,000nssi_CommonStockCarryingValue
Series A Preferred Stock , Shares 123,456us-gaap_PreferredStockDividendsShares  
Series A Preferred Stock , Carrying Value 50,000us-gaap_DividendsPreferredStockStock 50,000us-gaap_DividendsPreferredStockStock
Warrants , Shares 1,305,000nssi_WarrantsShares  
Warrants , Carrying Value 70,000nssi_WarrantsCarryingValue 70,000nssi_WarrantsCarryingValue
Convertible Notes , Shares     
Convertible Notes , Carrying Value 380,000nssi_ConvertibleNotesCarryingValue   
Total $ 576,000nssi_OtherInvestments1 $ 196,000nssi_OtherInvestments1