v3.25.2
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Aug. 11, 2025
Document Information [Line Items]    
Entity Central Index Key 0001822791  
Entity Registrant Name Clene Inc.  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-39834  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-2828339  
Entity Address, Address Line One 6550 South Millrock Drive, Suite G50  
Entity Address, City or Town Salt Lake City  
Entity Address, State or Province UT  
Entity Address, Postal Zip Code 84121  
City Area Code 801  
Local Phone Number 676-9695  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   9,990,568
Warrant [Member]    
Document Information [Line Items]    
Title of 12(b) Security Warrants, to acquire one-fortieth of one share of Common Stock for $230.00 per share  
Trading Symbol CLNNW  
Security Exchange Name NASDAQ  
Common Stock [Member]    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, $0.0001 par value  
Trading Symbol CLNN  
Security Exchange Name NASDAQ