PREMISES AND EQUIPMENT - Summary Of The Cost And Accumulated Depreciation And Amortization (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 5,116	$ 4,937
Less accumulated depreciation and amortization	(1,703)	(1,603)
Premises and equipment, net	3,413	3,334
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	1,553	1,553
Bank buildings [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	1,066	1,066
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	937	926
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	1,239	1,225
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 321	$ 167