PREMISES AND EQUIPMENT - Summary Of The Cost And Accumulated Depreciation And Amortization (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 5,023	$ 4,979
Less accumulated depreciation and amortization	(1,713)	(1,520)
Premises and equipment, net	3,310	3,459
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	926	926
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	1,311	1,267
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 167	$ 167