Accumulated Other Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Available-for-sale securities	$ (1,725)	$ (2,203)	$ (1,584)
Pension and other post-retirement benefit adjustments	12	(25)	(152)
Total accumulated other comprehensive loss	$ (1,713)	$ (2,228)	$ (1,736)