v3.26.1
Goodwill and Intangible Assets (Details) - USD ($)
 9 Months Ended 12 Months Ended
Jun. 30, 2026
Sep. 30, 2025
Goodwill [Line Items]    
Impairment losses in connection with the goodwill   $ 0
Goodwill $ 538,429,000 540,674,000
Goodwill, decrease from effects of foreign currency exchange rates 2,200,000  
SBS    
Goodwill [Line Items]    
Impairment losses in connection with the intangible assets   $ 1,800,000
Goodwill 89,900,000  
BSG    
Goodwill [Line Items]    
Goodwill $ 448,500,000