Annual report pursuant to Section 13 and 15(d)

Cover

v3.22.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 28, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-31    
Entity File Number 1-15288    
Entity Registrant Name NETWORK-1 TECHNOLOGIES, INC.    
Entity Central Index Key 0001065078    
Entity Tax Identification Number 11-3027591    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 65 Locust Avenue    
Entity Address, City or Town New Canaan    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06840    
City Area Code (203)    
Local Phone Number 920-1055    
Title of 12(b) Security Common Stock $.01 par value    
Trading Symbol NTIP    
Security Exchange Name NYSEAMER    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 47,450,000
Entity Common Stock, Shares Outstanding   23,883,024  
ICFR Auditor Attestation Flag false    
Auditor Name Friedman LLP    
Auditor Location New York, New York    
Auditor Firm ID 711