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Loans Receivable And Allowance For Loan Losses: Impaired Financing Receivables (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021
Recorded Investment |  |  |
With no related allowance recorded | $ 4,553 | $ 4,568 |
With an allowance recorded | 661 | 656 |
Total: | 5,214 | 5,224 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 4,599 | 4,615 |
With an allowance recorded | 661 | 656 |
Total: | 5,260 | 5,271 |
Related Allowance | 254 | 247 |
Average Recorded Investment |  |  |
With no related allowance recorded | 4,562 | 4,750 |
With an allowance recorded | 659 | 454 |
Total | 5,221 | 5,204 |
Interest Income Recognized |  |  |
With no related allowance recorded | 48 | 220 | [1]
With an allowance recorded | 0 | 0 |
Total | 48 | 220 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 39 | 182 |
With an allowance recorded | 0 | 0 |
Total | 39 | 182 |
Mortgage loans, one-to-four family |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 582 | 407 |
With an allowance recorded |  | 0 |
Total: | 582 | 407 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 625 | 450 |
With an allowance recorded |  | 0 |
Total: | 625 | 450 |
Related Allowance | 0 | 0 |
Average Recorded Investment |  |  |
With no related allowance recorded | 495 | 655 |
With an allowance recorded |  | 97 |
Total | 495 | 752 |
Interest Income Recognized |  |  |
With no related allowance recorded | 8 | 58 | [1]
With an allowance recorded |  | 0 |
Total | 8 | 58 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 8 | 52 |
With an allowance recorded |  | 0 |
Total | 8 | 52 |
Mortgage loans, commercial |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 3,037 | 3,143 |
Total: | 3,037 | 3,143 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 3,037 | 3,143 |
Total: | 3,037 | 3,143 |
Related Allowance | 0 | 0 |
Average Recorded Investment |  |  |
With no related allowance recorded | 3,090 | 3,039 |
Total | 3,090 | 3,039 |
Interest Income Recognized |  |  |
With no related allowance recorded | 40 | 159 | [1]
Total | 40 | 159 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 31 | 127 |
Total | 31 | 127 |
Mortgage loans, land |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 313 | 321 |
With an allowance recorded | 362 | 362 |
Total: | 675 | 683 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 313 | 321 |
With an allowance recorded | 362 | 362 |
Total: | 675 | 683 |
Related Allowance | 78 | 76 |
Average Recorded Investment |  |  |
With no related allowance recorded | 317 | 292 |
With an allowance recorded | 362 | 72 |
Total | 679 | 364 |
Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 2 | [1]
With an allowance recorded | 0 | 0 |
Total | 0 | 2 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 2 |
With an allowance recorded | 0 | 0 |
Total | 0 | 2 |
Consumer loans, home equity and second mortgage |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 456 | 516 |
Total: | 456 | 516 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 456 | 516 |
Total: | 456 | 516 |
Related Allowance | 0 | 0 |
Average Recorded Investment |  |  |
With no related allowance recorded | 486 | 552 |
Total | 486 | 552 |
Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 1 | [1]
Total | 0 | 1 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 1 |
Total | 0 | 1 |
Consumer loans, other |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 5 | 17 |
Total: | 5 | 17 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 5 | 17 |
Total: | 5 | 17 |
Related Allowance | 0 | 0 |
Average Recorded Investment |  |  |
With no related allowance recorded | 11 | 12 |
Total | 11 | 12 |
Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 0 |
Total | 0 | 0 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 0 |  |
With an allowance recorded |  | 0 |
Total | 0 | 0 |
Commercial business loans |  |  |
Recorded Investment |  |  |
With no related allowance recorded | 160 | 164 |
With an allowance recorded | 299 | 294 |
Total: | 459 | 458 |
Unpaid Principal Balance (Loan Balance Plus Charge Off) |  |  |
With no related allowance recorded | 163 | 168 |
With an allowance recorded | 299 | 294 |
Total: | 462 | 462 |
Related Allowance | 176 | 171 |
Average Recorded Investment |  |  |
With no related allowance recorded | 163 | 200 |
With an allowance recorded | 297 | 285 |
Total | 460 | 485 |
Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 0 | [1]
With an allowance recorded | 0 | 0 |
Total | 0 | 0 |
Cash Basis Interest Income Recognized |  |  |
With no related allowance recorded | 0 | 0 |
With an allowance recorded | 0 | 0 |
Total | $ 0 | $ 0 |
[1] | For the three months ended December 31, 2021

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