INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2024
Deferred tax assets:
Allowance for credit losses	$ 6,534		$ 5,858
Depreciation	1,334		1,122
Deferred compensation and directors' fees	1,656		1,444
Operating lease liabilities	1,253		1,435
Purchase accounting adjustment – fixed assets	154		154
Net unrealized losses on securities available for sale	12,484		22,487
Defined benefit pension and other benefit plans	448		527
Nonaccrued interest	381		381
Accrued expense	52		74
Capital loss carryforward	2,694	$ 11,500	0
Other items, net	114		135
Total gross deferred tax assets	27,104		33,617
Deferred tax liabilities:
Deferred loan fees and costs	1,054		1,220
Prepaid pension	4,268		4,283
Discount accretion	195		163
Core deposit intangible	1,847		1,821
REIT dividend	1,107		775
Operating lease right-of-use assets	1,253		1,435
Accrual for employee benefit plans	15		11
Other items, net	285		241
Total gross deferred tax liabilities	10,024		9,949
Valuation allowance	821		0
Net deferred tax asset	$ 16,259		$ 23,668