Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Defined Benefit Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Interest cost	$ 49	$ 54	$ 98	$ 108
Expected return on plan assets	(63)	(59)	(126)	(118)
Amortization of net loss	40	35	80	70
Net periodic pension cost	26	30	52	60
Supplemental Executive Retirement Plan [Member]
Components of Net Periodic Pension Costs [Abstract]
Net periodic pension cost	214	$ 163	419	$ 322
Postemployment benefits liability	$ 5,700		$ 5,700		$ 5,000