Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Feb. 28, 2022
Jun. 30, 2021
Document and Entity Information [Abstract]        
Document Type 10-K      
Document Annual Report true      
Document Transition Report false      
Document Period End Date Dec. 31, 2021      
Document Fiscal Year Focus 2021      
Document Fiscal Period Focus FY      
Current Fiscal Year End Date --12-31      
Entity File Number 001-37379      
Entity Registrant Name ONE GROUP HOSPITALITY, INC.      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 14-1961545      
Entity Address, Address Line One 1624 Market Street      
Entity Address, Address Line Two Suite 311      
Entity Address, City or Town Denver      
Entity Address, State or Province CO      
Entity Address, Postal Zip Code 80202      
City Area Code 646      
Local Phone Number 624-2400      
Title of 12(b) Security Common Stock, par value $0.0001 per share      
Trading Symbol STKS      
Security Exchange Name NASDAQ      
Entity Well-known Seasoned Issuer No      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Interactive Data Current Yes      
Entity Filer Category Accelerated Filer      
Entity Small Business true      
Entity Emerging Growth Company false      
ICFR Auditor Attestation Flag true      
Entity Shell Company false      
Entity Public Float       $ 233,409,937
Entity Common Stock, Shares Outstanding     32,183,371  
Auditor Name Deloitte & Touche LLP Plante & Moran PLLC    
Auditor Firm ID 34 166    
Auditor Location Denver, Colorado Boulder, Colorado    
Entity Central Index Key 0001399520      
Amendment Flag false