Pension Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Amounts Recognized in Consolidated Balance Sheet [Abstract]
Non-current liabilities (included in defined benefit and other postretirement obligations)	$ (25,860)	$ (25,834)
Pension Plan [Member]
Amounts Recognized in Consolidated Balance Sheet [Abstract]
Current liabilities (included in accrued employee related costs)	(1,204)	(1,061)
Non-current liabilities (included in defined benefit and other postretirement obligations)	(23,929)	(23,583)
Liability, Defined Benefit Plan	(25,133)	(24,644)
Other Postretirement Benefit Plan
Amounts Recognized in Consolidated Balance Sheet [Abstract]
Current liabilities (included in accrued employee related costs)	(111)	(109)
Non-current liabilities (included in defined benefit and other postretirement obligations)	(1,931)	(2,251)
Liability, Defined Benefit Plan	$ (2,042)	$ (2,360)