v3.26.1
Investment Securities: Schedule of Contractual maturities of debt securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Held-to-maturity Securities, Amortized Cost:    
Due within one year $ 25,746  
Due after one year to five years 39,886  
Due after five years to ten years 31  
Due after ten years 51,924  
Total 117,587 $ 136,861 [1]
Held-to-maturity Securities, Estimated Fair Value:    
Due within one year 25,488  
Due after one year to five years 37,913  
Due after five years to ten years 140  
Due after ten years 49,702  
Total 113,243 132,334
Available-for-sale Securities, Amortized Cost:    
Due within one year 0  
Due after one year to five years 3,130  
Due after five years to ten years 177  
Due after ten years 88,654  
Amortized Cost 91,961 $ 78,617
Available-for-sale Securities, Estimated Fair Value:    
Due within one year 0  
Due after one year to five years 3,124  
Due after five years to ten years 176  
Due after ten years 87,184  
Total $ 90,484  
[1] Derived from audited consolidated financial statements.