Annual report [Section 13 and 15(d), not S-K Item 405]

REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS (Details)

v3.25.3
REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS (Details) - USD ($)
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Aug. 31, 2024
Government Assistance [Line Items]      
Sale of stock, aggregate value of securities authorized $ 700,000,000.0    
Sale of stock, remaining capacity of aggregate value of securities authorized $ 519,300,000    
Common Stock At-the-Market Offerings      
Government Assistance [Line Items]      
Sale of stock, aggregate offering price authorized     $ 150,000,000
Sale of stock, number of shares issued in transaction (in shares) 362,482 476,138  
Sale of stock, price (in USD per share) $ 26.44 $ 23.10  
Sale of stock, gross proceeds from transaction $ 9,600,000 $ 11,000,000.0  
Sale of stock, consideration received on transaction 9,400,000 $ 10,800,000  
Sale of stock, remaining capacity of authorized offering price $ 129,400,000