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Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Mar. 05, 2025
Document Information [Line Items]    
Document Type 10-K  
Document Annual Report true  
Document Period End Date Dec. 31, 2024  
Document Transition Report false  
Entity File Number 001-33957  
Entity Registrant Name HARVARD BIOSCIENCE, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 04-3306140  
Entity Address, Address Line One 84 October Hill Road  
Entity Address, City or Town Holliston  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01746  
City Area Code 508  
Local Phone Number 893-8999  
Title of 12(b) Security Common Stock, $0.01 par value  
Trading Symbol HBIO  
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  
Document Financial Statement Error Correction [Flag] false  
Entity Shell Company false  
Entity Public Float $ 115.2  
Entity Common Stock, Shares Outstanding (in shares)   44,074,475
Auditor Firm ID 248  
Auditor Name GRANT THORNTON LLP  
Auditor Location Hartford, Connecticut  
Entity Central Index Key 0001123494  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus FY  
Amendment Flag false