v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 01, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Entity Registrant Name WHITEFIBER, INC.    
Entity Central Index Key 0002042022    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-42780    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 61-2222606    
Entity Address, Address Line One 31 Hudson Yards    
Entity Address, Address Line Two Floor 11    
Entity Address, Address Line Three Suite 30    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10001    
City Area Code (646)    
Local Phone Number 801-0779    
Title of 12(b) Security Ordinary Shares, $0.01 par value    
Trading Symbol WYFI    
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   38,365,362  
Entity Public Float     $ 0
Document Financial Statement Error Correction [Flag] false    
ICFR Auditor Attestation Flag false    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Documents Incorporated by Reference [Text Block] None.