XML 30 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Mar. 01, 2020
Jun. 30, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Trading Symbol MOSY    
Entity Registrant Name MOSYS, INC.    
Entity Central Index Key 0000890394    
Current Fiscal Year End Date --12-31    
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    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Security Exchange Name NASDAQ    
Entity File Number 000-32929    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 77-0291941    
Entity Address, Address Line One 2309 Bering Drive    
Entity Address, City or Town San Jose    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 95131    
City Area Code 408    
Local Phone Number 418-7500    
Document Annual Report true    
Document Transition Report false    
Entity Common Stock, Shares Outstanding   2,314,512  
Entity Public Float     $ 7,534,001
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No