Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Net Periodic Benefit Cost
Interest cost	$ 12	$ 24	$ 25	$ 48
Expected return on plan assets	(3)	(5)	(7)	(11)
Recognized actuarial loss	18	12	38	25
Net periodic benefit cost	$ 27	$ 31	$ 56	$ 62