Premises and Equipment - Components (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Gross value	$ 18,591	$ 17,991
Accumulated depreciation	(5,230)	(4,552)
Net book value	13,361	13,439
Land
Property, Plant and Equipment [Line Items]
Gross value	2,581	2,581
Office buildings and improvements
Property, Plant and Equipment [Line Items]
Gross value	13,346	12,932
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Gross value	2,606	2,428
Automobiles
Property, Plant and Equipment [Line Items]
Gross value	$ 58	$ 50