Employee Benefits - 2008 Equity Incentive Plan (Details) - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2017	Jun. 30, 2012
Equity Incentive Plan Description	The Company adopted an Equity Incentive Plan (the EIP) in 2008, reserving for award 132,000 shares (split-adjusted). EIP shares were available for award to directors, officers, and employees of the Company and its affiliates by a committee of outside directors.
Equity Incentive Plan Shares reserved	132,000
Restricted Stock
Equity Incentive Plan Shares Awarded				0	122,803
Equity Incentive Plan vesting percentage	20.00%
Equity Incentive Plan Shares Vested	2,700	2,825	7,100
Equity Incentive Plan Expense	$ 84,000	$ 88,000	$ 141,000
Equity Incentive Plan Unvested Compensation Expense	$ 51,000
Performance-based restricted stock
Equity Incentive Plan vesting percentage	20.00%