v3.25.4
Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Loss Per Share Attributable to Common Shareholders (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2025
Sep. 30, 2025
Dec. 31, 2025
Earnings Per Share Basic And Diluted [Line Items]      
Net Loss $ (304,463) $ (13,398) $ (317,861)
Weighted average number of shares outstanding, basic 41,004,125   20,502,062
Weighted average number of shares outstanding, diluted 41,004,125   20,502,062
Earnings per share, basic $ (7.43)   $ (15.5)
Earnings per share, diluted $ (7.43)   $ (15.5)
Common Class A [Member]      
Earnings Per Share Basic And Diluted [Line Items]      
Net Loss $ (304,463)   $ (317,861)
Weighted average number of shares outstanding, basic 41,004,125   20,502,062
Weighted average number of shares outstanding, diluted 41,004,125   20,502,062
Earnings per share, basic $ (7.43)   $ (15.5)
Earnings per share, diluted $ (7.43)   $ (15.5)