Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Income Taxes [Abstract]
Inventories	$ 2,774	$ 4,101
Employee medical and other benefits	13,201	9,459
Receivable and other allowances	4,699	4,423
Other accrued liabilities	2,869	3,437
Total deferred tax assets	23,543	21,420
Property, plant and equipment	(20,744)	(16,516)
Goodwill	(3,427)	(3,083)
Other	(274)	(830)
Total deferred tax liabilities	(24,445)	(20,429)
Net deferred tax (liability) asset	$ (902)	$ 991