Consolidated Statements Of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Tax effect included in net pension and postretirement benefit gains (losses)	$ 1,415	$ (758)	$ (1,171)
Common stock, dividends per share (in dollars per share)	$ 2.15	$ 6.96	$ 1.82