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Pension Plans And Other Postretirement Benefits (Fair Value Of The Pension And Postretirement Benefit Plans Assets By Asset Category) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Foreign Postretirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	$ 0	$ 0	$ 0
Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	108,177	103,364	92,456
Foreign Pension Plans [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	20,222	16,418
Foreign Pension Plans [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	16,715	13,233
Foreign Pension Plans [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	297	465
Foreign Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	81,226	76,023
Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	20,222	16,418
Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	16,715	13,233
Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	297	465
Foreign Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	26,951	27,341
Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U.S. Postretirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	25,903	26,623	27,157
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	129,086	112,143	90,141
U.S. Pension Plans [Member] | Mutual Funds-Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	8,090	6,987
U.S. Pension Plans [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	3,198	1,192
U.S. Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	116,746	99,210
U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Mutual Funds-Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	8,090	6,987
U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	3,198	1,192
U.S. Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	12,340	12,933
U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Mutual Funds-Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U.S. Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Mutual Funds-Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U. S. Companies [Member] | Foreign Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	5,833	6,081
U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	5,833	6,081
U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
U. S. Companies [Member] | U.S. Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	89,659	73,814
U. S. Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	89,659	73,808
U. S. Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	6
U. S. Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
International Companies [Member] | Foreign Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	38,159	39,826
International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	38,159	39,826
International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
International Companies [Member] | U.S. Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	11,234	11,978
International Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	11,234	11,768
International Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	210
International Companies [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Real Estate Investment Trusts [Member] | U.S. Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	1,198	1,930
Real Estate Investment Trusts [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	1,198	1,930
Real Estate Investment Trusts [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Real Estate Investment Trusts [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Common Collective Trust [Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	11,898	12,453
Common Collective Trust [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Common Collective Trust [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	11,898	12,453
Common Collective Trust [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Exchange Traded Funds [Member] | U.S. Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	838
Exchange Traded Funds [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	838
Exchange Traded Funds [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Exchange Traded Funds [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Money Market Instruments[Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	3,367	2,687
Money Market Instruments[Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	3,367	2,687
Money Market Instruments[Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Money Market Instruments[Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	9,788	9,492
Insurance Contract [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	9,788	9,492
Insurance Contract [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | U.S. Postretirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	25,903	26,623
Insurance Contract [Member] | U.S. Postretirement Plan [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | U.S. Postretirement Plan [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	25,903	26,623
Insurance Contract [Member] | U.S. Postretirement Plan [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	442	264
Insurance Contract [Member] | U.S. Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Insurance Contract [Member] | U.S. Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	442	264
Insurance Contract [Member] | U.S. Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	779	940
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	690	470
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Money Market Instruments[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	1,635	1,720
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	333	278
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Money Market Instruments[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	779	940
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	690	470
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Money Market Instruments[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	1,635	1,720
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	333	278
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Debt Securities-Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Debt Securities-Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Money Market Instruments[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | U. S. Companies [Member] | Foreign Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	825	786
Pooled Investment Funds [Member] | U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	825	786
Pooled Investment Funds [Member] | U. S. Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | International Companies [Member] | Foreign Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	8,735	9,752
Pooled Investment Funds [Member] | International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	8,735	9,752
Pooled Investment Funds [Member] | International Companies [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Property [Member] | Foreign Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	4,166	3,903
Pooled Investment Funds [Member] | Property [Member] | Foreign Pension Plans [Member] | Fair Value, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	0	0
Pooled Investment Funds [Member] | Property [Member] | Foreign Pension Plans [Member] | Fair Value, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	4,166	3,903
Pooled Investment Funds [Member] | Property [Member] | Foreign Pension Plans [Member] | Fair Value, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, total	$ 0	$ 0

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(iv)(b)(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 49

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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