Employee Benefit Plans, Allocation of Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Allocation of Plan Assets [Abstract]
Total plan assets	$ 4,502	$ 5,759	$ 5,214
Weighted-average plan asset allocation	100.00%	100.00%
Cash and Cash Equivalents [Member]
Allocation of Plan Assets [Abstract]
Total plan assets	$ 0	$ 57
Weighted-average plan asset allocation	0.00%	1.00%
Mutual Funds - Balanced [Member]
Allocation of Plan Assets [Abstract]
Total plan assets	$ 850	$ 1,035
Weighted-average plan asset allocation	18.90%	18.00%
Mutual Funds - Balanced [Member] | Maximum [Member]
Allocation of Plan Assets [Abstract]
Allowable variation	5.00%
Mutual Funds - Fixed Income [Member]
Allocation of Plan Assets [Abstract]
Total plan assets	$ 2,366	$ 2,983
Weighted-average plan asset allocation	52.60%	51.80%
Mutual Funds - Equity [Member]
Allocation of Plan Assets [Abstract]
Total plan assets	$ 1,286	$ 1,684
Weighted-average plan asset allocation	28.50%	29.20%
Short-term and Intermediate-term Fixed Income Bond Funds [Member]
Allocation of Plan Assets [Abstract]
Target allocation for investment in mutual funds	60.00%
Large Cap Value Funds [Member]
Allocation of Plan Assets [Abstract]
Target allocation for investment in mutual funds	40.00%