Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2021 USD ($) Office shares	Jun. 30, 2020 USD ($)
Nature of Operations [Abstract]
Number of offices | Office	17
Cash and Cash Equivalents [Abstract]
Interest-bearing deposits in banks and other financial institutions	$ 137,500	$ 30,100
Allowance for Loan Losses [Abstract]
Threshold principal amount of nonaccrual loans evaluated individually for impairment	$ 100
Income Recognition on Impaired and Nonaccrual loans [Abstract]
Threshold period of delinquency after which a loan is placed on nonaccrual status	90 days
Treasury Stock [Abstract]
Number of shares authorized for repurchase (in shares) | shares	200,000
Total number of shares repurchased under the plan (in shares) | shares	24,400
Federal Home Loan Bank Stock [Abstract]
Other-than-temporary impairment charge	$ 0	0
Advertising [Abstract]
Advertising expense	$ 491	$ 473
Building and Improvements [Member]
Premises and Equipment [Abstract]
Property, plant and equipment, useful life	39 years
Furniture and Equipment [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Property, plant and equipment, useful life	3 years
Furniture and Equipment [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Property, plant and equipment, useful life	8 years