XML 14 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 10, 2025
Jun. 30, 2024
Document Information [Line Items]      
Entity Central Index Key 0001710340    
Entity Registrant Name Eton Pharmaceuticals, Inc.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2024    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 001-38738    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 37-1858472    
Entity Address, Address Line One 21925 W. Field Parkway, Suite 235    
Entity Address, City or Town Deer Park    
Entity Address, State or Province IL    
Entity Address, Postal Zip Code 60010-7278    
City Area Code 847    
Local Phone Number 787-7361    
Title of 12(b) Security Common Stock, $0.001 par value    
Trading Symbol ETON    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 80,200,000
Entity Common Stock, Shares Outstanding   26,817,535  
Auditor Firm ID 173    
Auditor Name Crowe LLP    
Auditor Location Oakbrook Terrace, Illinois