Pensions and Other Postretirement Benefits (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Net Periodic Benefit Cost
Service cost	$ 0	$ 0
Interest cost	50	96
Expected return on plan assets	(15)	(22)
Recognized actuarial loss	76	50
Amortization of unrecognized net transition obligation (asset)	0	0
Net periodic benefit cost	$ 111	$ 124