Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2015
Mar. 28, 2016
Jun. 30, 2015
Document And Entity Information      
Entity Registrant Name NETWORK 1 TECHNOLOGIES INC    
Entity Central Index Key 0001065078    
Document Type 10-K    
Document Period End Date Dec. 31, 2015    
Document Fiscal Period Focus FY    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Is Entity a Well-known Seasoned Issuer No    
Is Entity a Voluntary Filer No    
Is Entity's Reporting Status Current Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 23,701,650
Entity Common Stock, Shares Outstanding   23,295,946  
Document Fiscal Year Focus 2015