Employee and Director Benefit Plans - Benefit plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Directors Retirement Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Benefit amount for a period	120 months
Expense related to benefit plan	$ 26	$ 128
Accumulated liability	1,600	1,600
Director Deferred Compensation Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Expense related to benefit plan	25	61
Accumulated liability	$ 1,200	$ 1,300