Income Taxes - Schedule of Tax Effects of Existing Temporary Differences that Give Rise to Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024	Jul. 01, 2023
Deferred tax assets:
ESOP	$ 60	$ 160
Capital loss carryover	586	586
Deferred compensation	570	693
Unrecognized pension losses	392	475
Deferred loan fees	13	13
Allowance for credit loss	1,749	1,470
Compensation	396	250
Depreciation	432	432
Federal net operating loss	624	772
State net operating loss	535	510
Charitable contributions	1,579	1,579
Uncollected interest	0	2
Fair value adjustments related to acquisition	941	2,201
Total deferred tax assets	7,877	9,143
Deferred tax liabilities:
Core deposit intangible	1,768	2,235
Prepaid pension	966	900
Deferred loan costs	178	178
Other	92	79
Total deferred tax liabilities	3,004	3,392
Valuation allowance	2,165	2,165
Net deferred income tax asset included in other assets	$ 2,708	$ 3,586	$ 1,971