v3.26.1
Investment Securities: Marketable Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Held to Maturity            
Amortized Cost $ 117,587   $ 136,861 [1]      
Gross Unrealized Gains 213   416      
Gross Unrealized Losses (4,557)   (4,943)      
Estimated Fair Value 113,243   132,334      
Allowance for Credit Losses 30 $ 31 36 $ 46 $ 50 $ 60
Available for Sale            
Amortized Cost 91,961   78,617      
Gross Unrealized Gains 106   382      
Gross Unrealized Losses (1,583)   (759)      
Estimated Fair Value 90,484   78,240      
U.S. Treasury and U.S. government agency securities            
Held to Maturity            
Amortized Cost 56,844   69,646      
Gross Unrealized Gains 0   15      
Gross Unrealized Losses (2,168)   (2,760)      
Estimated Fair Value 54,676   66,901      
Allowance for Credit Losses 0   0      
Available for Sale            
Amortized Cost     4,968      
Gross Unrealized Gains     0      
Gross Unrealized Losses     0      
Estimated Fair Value     4,968      
U.S. government agencies            
Held to Maturity            
Amortized Cost 47,025   48,735      
Gross Unrealized Gains 39   199      
Gross Unrealized Losses (1,553)   (1,357)      
Estimated Fair Value 45,511   47,577      
Allowance for Credit Losses 0   0      
Available for Sale            
Amortized Cost 91,961   73,649      
Gross Unrealized Gains 106   382      
Gross Unrealized Losses (1,583)   (759)      
Estimated Fair Value 90,484   73,272      
Private label residential            
Held to Maturity            
Amortized Cost 13,718   17,376      
Gross Unrealized Gains 174   196      
Gross Unrealized Losses (836)   (822)      
Estimated Fair Value 13,056   16,750      
Allowance for Credit Losses 30 31 35 45 48 55
Municipal securities            
Held to Maturity            
Amortized Cost     605      
Gross Unrealized Gains     6      
Gross Unrealized Losses     0      
Estimated Fair Value     611      
Allowance for Credit Losses     0      
Bank issued trust preferred securities            
Held to Maturity            
Amortized Cost     499      
Gross Unrealized Gains     0      
Gross Unrealized Losses     (4)      
Estimated Fair Value     495      
Allowance for Credit Losses $ 0 $ 0 $ 1 $ 1 $ 2 $ 5
[1] Derived from audited consolidated financial statements.