Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Defined Benefit Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Interest cost	$ 41	$ 49
Expected return on plan assets	(64)	(63)
Amortization of net loss	52	40
Net periodic pension cost	29	26
Supplemental Executive Retirement Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Net periodic pension cost	256	$ 205
Postemployment benefits liability	$ 7,000		$ 6,400