v3.26.1
Summary of Significant Accounting Policies - Computation of basic and diluted net income per common stock (Details) - USD ($)
3 Months Ended 4 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2025
Numerator:      
Net loss- basic $ (139,635) $ (145,382)  
Net loss- diluted $ (139,635) $ (145,382)  
Denominator:      
Weighted average number of Class A member units, basic (in shares) 1,000 1,000  
Weighted average number of Class A member units, diluted (in shares) 1,000 1,000  
Basic net income per common stock $ (139.64) $ (145.38)  
Diluted net income per common stock $ (139.64) $ (145.38)  
Avalanche Treasury Company LLC      
Summary of Significant Accounting Policies      
Number of potentially diluted Class A member units equivalents 0   0
Numerator:      
Net loss- basic $ (26,780,242)   $ (59,595,550)
Net loss- diluted $ (26,780,242)   $ (59,595,550)
Denominator:      
Weighted average number of Class A member units, basic (in shares) 27,368,672   16,805,272
Weighted average number of Class A member units, diluted (in shares) 27,368,672   16,805,272
Basic net income per common stock $ (0.98)   $ (3.55)
Diluted net income per common stock $ (0.98)   $ (3.55)