INCOME TAXES - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Deferred tax assets
Allowance for credit losses	$ 7,002	$ 7,098	$ 6,480
Net operating loss carryforward	144	144
OTTI - securities		325	325
Post-retirement benefit obligations	492	497	494
Unrealized losses on securities available for sale	835	967	4,849
Deferred compensation	77	68	137
Contribution carryforward			173
Lease liabilities	1,276	1,514	1,621
Other	748	627	688
Total deferred tax assets	10,574	11,240	14,767
Deferred tax liabilities
Depreciation	(1,420)	(1,687)	(1,839)
Net deferred loan origination costs	(637)	(634)	(560)
Prepaid pension	(2,315)	(2,293)	(2,404)
Prepaid expenses	(293)	(241)	(236)
Unfunded defined benefit and postretirement benefit plan assets	(2,797)	(2,716)	(1,463)
ROU assets	(1,197)	(1,436)	(1,551)
Other	(2,198)	(1,961)	(1,495)
Total deferred tax liabilities	(10,857)	(10,968)	(9,548)
Net deferred tax asset at end of year		$ 272	$ 5,219
Net deferred tax liability at end of year	$ (283)