Pension Plans (Fair Value Of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2010
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	$ 124,833		$ 110,781	$ 115,120
U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	86,016
International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	38,817
Cash Equivalents [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	1,339
U.S. Treasury, Agency And Other Local Government And Non-Corporate [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	11,827
Mortgage-Backed [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	7,382
Corporate Investment Grade [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	8,353
Corporate High Yield [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	848
Large Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	36,222
Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	8,454
U.S. Real Estate Investment Trusts [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	828
Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	9,670
Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	83
Emerging Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	78
Commodities [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	932
Government [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	7,006
Europe Corporate Investment Grade [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	3,578
Europe Large Capitalization Stocks [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	17,767
Insurance Company Funds [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	9,887	[1]
Cash [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	579
Level 1 [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	28,930
Level 1 [Member] | Cash Equivalents [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | U.S. Treasury, Agency And Other Local Government And Non-Corporate [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Mortgage-Backed [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Corporate Investment Grade [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Corporate High Yield [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Large Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | U.S. Real Estate Investment Trusts [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Emerging Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Commodities [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 1 [Member] | Government [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	7,006
Level 1 [Member] | Europe Corporate Investment Grade [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	3,578
Level 1 [Member] | Europe Large Capitalization Stocks [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	17,767
Level 1 [Member] | Insurance Company Funds [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	[1]
Level 1 [Member] | Cash [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	579
Level 2 [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	86,016
Level 2 [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	9,887
Level 2 [Member] | Cash Equivalents [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	1,339
Level 2 [Member] | U.S. Treasury, Agency And Other Local Government And Non-Corporate [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	11,827
Level 2 [Member] | Mortgage-Backed [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	7,382
Level 2 [Member] | Corporate Investment Grade [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	8,353
Level 2 [Member] | Corporate High Yield [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	848
Level 2 [Member] | Large Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	36,222
Level 2 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	8,454
Level 2 [Member] | U.S. Real Estate Investment Trusts [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	828
Level 2 [Member] | Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	9,670
Level 2 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	83
Level 2 [Member] | Emerging Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	78
Level 2 [Member] | Commodities [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	932
Level 2 [Member] | Government [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 2 [Member] | Europe Corporate Investment Grade [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 2 [Member] | Europe Large Capitalization Stocks [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 2 [Member] | Insurance Company Funds [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	9,887	[1]
Level 2 [Member] | Cash [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Cash Equivalents [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | U.S. Treasury, Agency And Other Local Government And Non-Corporate [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Mortgage-Backed [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Corporate Investment Grade [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Corporate High Yield [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Large Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | U.S. Real Estate Investment Trusts [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Small Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Emerging Large/Mid Capitalization Stocks [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Commodities [Member] | U.S. Plan Assets Common Collective Trusts [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Government [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Europe Corporate Investment Grade [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Europe Large Capitalization Stocks [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0
Level 3 [Member] | Insurance Company Funds [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	0	[1]
Level 3 [Member] | Cash [Member] | International Plan Assets [Member]
Fair Value of Plan Assets [Line Items]
Fair value of plan assets	$ 0

[1] These investments are comprised primarily of funds invested with an insurance company in Japan with a guaranteed rate of return. The insurance company invests these assets primarily in government and corporate bonds.