v3.26.1
Loans Receivable And Allowance For Credit Losses (Allowance For Credit Losses) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance $ 26,599 $ 23,970 $ 24,039 $ 23,035
Charge-offs 150 29 314 169
Recoveries 2 4 10 37
Provision for credit losses (348) (1,137) 2,368 (95)
Ending Balance 26,103 22,808 26,103 22,808
One- to Four-Family Segment [Member]        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance 2,663 3,562 3,046 3,673
Charge-offs 0 0 12 113
Recoveries 1 2 2 7
Provision for credit losses (440) (32) (812) (35)
Ending Balance 2,224 3,532 2,224 3,532
Commercial Segment [Member]        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance 23,735 20,176 20,776 19,154
Charge-offs 123 0 225 0
Recoveries 0 1 2 23
Provision for credit losses 84 (1,138) 3,143 (138)
Ending Balance 23,696 19,039 23,696 19,039
Commercial Segment [Member] | Commercial Real Estate [Member]        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance 21,689 19,005 18,277 17,968
Charge-offs 50 0 50 0
Recoveries 0 0 0 20
Provision for credit losses (753) (2,407) 2,659 (1,390)
Ending Balance 20,886 16,598 20,886 16,598
Commercial Segment [Member] | Commercial and Industrial [Member]        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance 2,046 1,171 2,499 1,186
Charge-offs 73 0 175 0
Recoveries 0 1 2 3
Provision for credit losses 837 1,269 484 1,252
Ending Balance 2,810 2,441 2,810 2,441
Consumer Segment [Member]        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning Balance 201 232 217 208
Charge-offs 27 29 77 56
Recoveries 1 1 6 7
Provision for credit losses 8 33 37 78
Ending Balance $ 183 $ 237 $ 183 $ 237