Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Defined Benefit Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Interest cost	$ 41	$ 49	$ 82	$ 98
Expected return on plan assets	(64)	(63)	(127)	(126)
Amortization of net loss	52	40	104	80
Net periodic pension cost	29	26	59	52
Supplemental Executive Retirement Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Net periodic pension cost	270	$ 214	526	$ 419
Postemployment benefits liability	$ 7,300		$ 7,300		$ 6,400