Income Taxes (Composition of Deferred Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Deferred tax assets:
Retirement healthcare and early retirement benefits	$ 10,563	$ 13,727
Foreign net operating loss carryforwards	7,058	2,972
Inventory	16,944	14,770
Deferred and stock-based compensation	18,657	16,451
Defined benefit pension	866	14,388
Other reserves	9,055	10,751
Credits and incentives	8,046	4,145
Other	10,584	5,607
Valuation allowance	(11,783)	(2,752)
Total deferred tax assets, net of valuation allowance	69,990	80,059
Deferred tax liabilities:
Goodwill and intangibles - net	(97,804)	(100,889)
Property, plant and equipment	(17,175)	(5,699)
Other	(3,391)	(3,028)
Total deferred tax liabilities	(118,370)	(109,616)
Net deferred tax liabilities	$ (48,380)	$ (29,557)