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Common Stock Transactions - Schedule of Repurchase Agreements (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2025
Jun. 30, 2025
May 31, 2025
Apr. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Aug. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Aug. 01, 2025
Aug. 02, 2024
Equity [Abstract]                        
Total number of shares repurchased (in shares) 368,333 11,200 158,199 2,285,299 77,777 9,400 322,528 2,900,808 331,928      
Average price paid per share (in dollars per share) $ 14.02 $ 14.29 $ 14.27 $ 13.97 $ 14.53 $ 14.54 $ 14.48 $ 14.01 $ 14.49      
Approximate Dollar Value of Shares that have been Purchased Under the Plan $ 5,165 $ 160 $ 2,258 $ 31,918 $ 1,130 $ 137 $ 4,672 $ 40,631 $ 4,809 $ 16,861    
Approximate Dollar Value of Shares that May Yet be Purchased Under the Plan $ 144,835 $ 109,726 $ 109,886 $ 112,144 $ 144,062 $ 145,191 $ 145,328 $ 144,835 $ 145,191      
Stock repurchase program, authorized amount                     $ 150,000 $ 150,000