Federal Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Deferred Tax Assets
Allowance for credit losses	$ 3,800	$ 3,670
Allowance for OREO losses	5	5
OTTI credit impairment on investment securities	38	50
Accrued interest on loans	68	69
Deferred compensation and bonuses	121	163
Reserve for loan commitments	90	69
Operating lease liabilities	646	331
Net unrealized losses on investment securities and investments in equity securities	89	5
Other	435	70
Total deferred tax assets	5,292	4,432
Deferred Tax Liabilities
Goodwill	1,187	1,187
Loan servicing rights	171	288
Depreciation	997	815
Loan fees/costs	1,108	1,044
Prepaid expenses	168	159
Purchase accounting adjustment	83	110
Operating lease ROU assets	619	310
Other	0	27
Total deferred tax liabilities	4,333	3,940
Net deferred tax assets	$ 959	$ 492