Postretirement Benefits (Schedule Of Change In Benefit Obligation) (Details) - Postretirement Benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 2,779	$ 2,934
Service cost	32	31	$ 31
Interest cost	108	130	113
Actuarial loss (gain)	155	(31)
Curtailment gain	0	(161)
Plan participant contributions	49	53
Benefits paid	(148)	(177)
Benefit obligation at end of year	$ 2,975	$ 2,779	$ 2,934