XML 60 R50.htm IDEA: XBRL DOCUMENT v3.25.0.1
Fair Value Measurements - Narrative (Details) - USD ($)
 3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Available-for-sale securities purchased $ 310,999,000 $ 49,380,000  
Proceeds from sales of available-for-sale securities 797,000 2,624,000  
Held-to-maturity securities purchased 114,182,000 0  
Proceeds from sale of held-to-maturity securities $ 0 $ 0  
Term of contractual due dates, mortgage-backed securities 25 years    
Accrued interest for available-for-sale securities $ 10,331,000   $ 9,311,000
Accrued interest for held-to-maturity securities 1,602,000   $ 1,154,000
Consumer loans | Single-family residential      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Foreclosed residential real estate properties held as REO 681,000    
Real estate acquired through foreclosure $ 6,281,000