Federal Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Deferred Tax Assets
Allowance for loan losses	$ 2,878	$ 2,613
Allowance for OREO losses	5	42
OTTI credit impairment on investment securities	62	64
Accrued interest on loans	63	75
Deferred compensation and bonuses	260	301
Reserve for loan commitments	64	76
Operating lease liabilities	434	495
Net unrealized losses on investment securities and investments in equity securities	190	0
Other	66	46
Total deferred tax assets	4,022	3,712
Deferred Tax Liabilities
Goodwill	1,187	1,187
Loan servicing rights	635	731
Depreciation	757	787
Loan fees/costs	771	584
FHLB stock dividends	0	38
Prepaid expenses	175	162
Purchase accounting adjustment	208	233
Net unrealized gains on investment securities and investments in equity securities	0	20
Operating lease ROU assets	416	480
Total deferred tax liabilities	4,149	4,222
Net deferred tax liabilities	$ (127)	$ (510)