Postretirement Benefits (Components Of Net Periodic Benefit Cost) (Details) (Postretirement Benefits [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8	$ 6	$ 16	$ 12
Interest cost	28	37	56	74
Amortization of unrecognized net gain	(5)	(8)	(10)	(16)
Amortization of prior service asset	(1)	(1)	(2)	(2)
Net periodic benefit (income) cost	$ 30	$ 34	$ 60	$ 68