Income Taxes (Composition of Deferred Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Deferred tax assets:
Defined benefit plans, other postretirement	$ 10,762	$ 10,563
Foreign net operating loss carryforwards	5,552	7,058
Inventory	21,608	16,944
Deferred and stock-based compensation	24,987	18,657
Defined benefit pension	227	866
Other reserves	10,513	9,055
Credits and incentives	8,178	8,046
Other	11,422	10,584
Valuation allowance	(9,486)	(11,783)
Total deferred tax assets, net of valuation allowance	83,763	69,990
Deferred tax liabilities:
Goodwill and intangibles - net	(96,493)	(97,804)
Property, plant and equipment	(18,288)	(17,175)
Other	(7,419)	(3,391)
Total deferred tax liabilities	(122,200)	(118,370)
Net deferred tax liabilities	$ (38,437)	$ (48,380)