v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 26, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-43400  
Registrant Name Standard Nuclear, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-3989746  
Entity Address, Address Line One 200 Europia Ave  
Entity Address, City or Town Oak Ridge  
Entity Address, State or Province TN  
Entity Address, Postal Zip Code 37830  
City Area Code 865  
Local Phone Number 272-2324  
Title of 12(b) Security Class A Common Stock, par value $0.00001 per share  
Trading Symbol STDN  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Central Index Key 0002086716  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   144,972,447
Common Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11,578,308