Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 29, 2020
Jun. 28, 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 OSS    
Entity Registrant Name One Stop Systems, Inc.    
Entity Central Index Key 0001394056    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 18,973,168
Entity Common Stock, Shares Outstanding   16,459,457  
Entity Shell Company false    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Security Exchange Name NASDAQ    
Entity File Number 001-38371    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 33-0885351    
Entity Address, Address Line One 2235 Enterprise Street #110    
Entity Address, City or Town Escondido    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92029    
City Area Code 877    
Local Phone Number 438-2724    
Document Annual Report true    
Document Transition Report false    
Documents Incorporated by Reference