Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Net Periodic Benefit Cost
Interest cost	$ 30	$ 60
Expected return on plan assets	(5)	(5)
Recognized actuarial loss	89	64
Net periodic benefit cost	$ 114	$ 119