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Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Mar. 01, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2023    
Entity Registrant Name HERITAGE GLOBAL INC.    
Entity Central Index Key 0000849145    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   37,157,616  
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well Known Seasoned Issuer No    
Entity Public Float     $ 105.8
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity File Number 001-39471    
Entity Tax Identification Number 59-2291344    
ICFR Auditor Attestation Flag false    
Entity Address, Postal Zip Code 92130    
City Area Code 858    
Local Phone Number 847-0659    
Entity Incorporation, State or Country Code FL    
Entity Address, Address Line One 12625 High Bluff Drive    
Entity Address, Address Line Two Suite 305    
Entity Address, City or Town San Diego    
Entity Address, State or Province CA    
Entity Interactive Data Current Yes    
Title of 12(b) Security Common stock, $0.01 par value    
Document Financial Statement Error Correction [Flag] false    
Document Annual Report true    
Document Transition Report false    
Trading Symbol HGBL    
Security Exchange Name NASDAQ    
Documents Incorporated by Reference

Portions of the Registrant’s definitive Proxy Statement for its 2024 Annual Meeting of Stockholders are incorporated by reference into Part III hereof.

    
Auditor Name UHY LLP    
Auditor Location West Des Moines, Iowa    
Auditor Firm ID 1195