v3.26.1
Cover - shares
 6 Months Ended
Jul. 03, 2026
Aug. 10, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jul. 03, 2026  
Document Transition Report false  
Entity File Number 001-43245  
Entity Registrant Name The Elmet Group Co.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 33-1881598  
Entity Address, Address Line One 280 Fore Street  
Entity Address, Address Line Two Suite 301  
Entity Address, City or Town Portland  
Entity Address, State or Province ME  
Entity Address, Postal Zip Code 04101  
City Area Code (207)  
Local Phone Number 518-6791  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol ELMT  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   30,459,498
Amendment Flag false  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2027  
Entity Central Index Key 0002101698  
Current Fiscal Year End Date --01-01  
Former Address    
Document Information [Line Items]    
Entity Address, Address Line One 2 Portland Fish Pier  
Entity Address, Address Line Two Suite 214  
Entity Address, City or Town Portland  
Entity Address, State or Province ME