MINIMUM REGULATORY CAPITAL REQUIREMENTS - Summary of Bank's Actual Capital Amounts and Ratios (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($)
Capital	$ 64,783	$ 65,237
Common Equity Tier One Capital	63,036	63,490
Tier One Risk Based Capital	63,036	63,490
Tier One Leverage Capital	$ 63,036	$ 63,490
Capital To Risk Weighted Assets	0.326	0.349
CommonEquity Tier One Capital Ratio	0.317	0.340
Tier One Risk Based Capital To Risk Weighted Assets	0.317	0.340
Tier One Leverage Capital To Average Assets	0.179	0.174
Capital Required For Capital Adequacy	$ 15,902	$ 14,936
Common Equity TierOne Capital Required For Capital Adequacy	8,945	8,401
Tier One Risk Based Capital Required For Capital Adequacy	11,926	11,202
Tier One Leverage Capital Required For Capital Adequacy	$ 14,090	$ 14,580
Capital Required For Capital Adequacy To Risk Weighted Assets	0.080	0.080
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	0.060	0.060
Tier One Leverage Capital Required For Capital Adequacy To Average Assets	0.040	0.040
Capital Required To Be Well Capitalized	$ 19,877	$ 18,670
Common Equity Tier One Capital Required To Be Well Capitalized	12,920	12,135
Tier One Risk Based Capital Required To Be Well Capitalized	15,902	14,936
Tier One Leverage Capital Required To Be Well Capitalized	$ 17,613	$ 18,225
Capital Required To Be Well Capitalized To Risk Weighted Assets	0.100	0.100
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	0.080	0.080
Tier One Leverage Capital Required To Be Well Capitalized To Average Assets	0.050	0.050