MINIMUM REGULATORY CAPITAL REQUIREMENTS - Summary of Bank's Actual Capital Amounts and Ratios (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)
Capital	$ 65,501	$ 65,532
Common Equity Tier One Capital	63,918	63,799
Tier One Risk Based Capital	63,918	63,799
Tier One Leverage Capital	$ 63,918	$ 63,799
Capital To Risk Weighted Assets	0.344	0.338
Common Equity Tier One Capital Ratio	0.335	0.329
Tier One Risk Based Capital To Risk Weighted Assets	0.335	0.329
Tier One Leverage Capital To Average Assets	0.177	0.178
Capital Required For Capital Adequacy	$ 15,249	$ 15,501
Common Equity TierOne Capital Required For Capital Adequacy	8,578	8,719
Tier One Risk Based Capital Required For Capital Adequacy	11,437	11,626
Tier One Leverage Capital Required For Capital Adequacy	$ 14,460	$ 14,317
Capital Required For Capital Adequacy To Risk Weighted Assets	0.08	0.08
Banking Regulation Common Equity Tier One Risk Based Capital Ratio Capital Adequacy Minimum	0.045	0.045
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets	0.06	0.06
Tier One Leverage Capital Required For Capital Adequacy To Average Assets	0.04	0.04
Capital Required To Be Well Capitalized	$ 19,062	$ 19,377
Common Equity Tier One Capital Required To Be Well Capitalized	12,390	12,595
Tier One Risk Based Capital Required To Be Well Capitalized	15,249	15,501
Tier One Leverage Capital Required To Be Well Capitalized	$ 18,075	$ 17,896
Capital Required To Be Well Capitalized To Risk Weighted Assets	0.10	0.10
Banking Regulation Common Equity Tier One Risk Based Capital Ratio Well Capitalized Minimum	0.065	0.065
Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets	0.08	0.08
Tier One Leverage Capital Required To Be Well Capitalized To Average Assets	0.05	0.05