Commitments And Contingencies (Schedule Of Future Minimum Payments For Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Commitments And Contingencies [Abstract]
Operating Leases, 2012	$ 15,631
Operating Leases, 2013	11,580
Operating Leases, 2014	8,471
Operating Leases, 2015	5,997
Operating Leases, 2016	4,618
Operating Leases, Thereafter	7,974
Operating Leases, Future Minimum Payments Due, Total	54,271
Minimum Sublease Income, 2012	376
Minimum Sublease Income, 2013	307
Minimum Sublease Income, 2014	143
Minimum Sublease Income, 2015
Minimum Sublease Income, 2016
Minimum Sublease Income, Thereafter
Minimum Sublease Income, Total minimum lease payments	826
Operating Leases Net, 2012	15,255
Operating Leases Net, 2013	11,273
Operating Leases Net, 2014	8,328
Operating Leases Net, 2015	5,997
Operating Leases Net, 2016	4,618
Operating Leases Net, Thereafter	7,974
Operating Leases Net, Total minimum lease payments	$ 53,445

Operating Leases and minimum sublease income net current

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- Definition

Operating leases and minimum sublease income net payments due in five years

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- Definition

Operating leases and minimum sublease income net payments due in four years

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- Definition

Operating leases and minimum sublease income net payments due in three years

+ References

No definition available.

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- Definition

Operating leases and minimum sublease income net payments due in two years

+ References

No definition available.

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- Definition

Operating leases and minimum sublease income net payments due thereafter

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- Definition

Operating Leases and minimum sublease income net payments due total

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No definition available.

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- Definition

This element represents the total aggregate minimum sublease rentals, if any, to be received under noncancelable subleases existing as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 98

-Paragraph 18

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 40

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6456377&loc=d3e50824-112756

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases after the fifth year following the balance sheet date.

+ References

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases within the fifth year following the balance sheet date.

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases within the fourth year following the balance sheet date.

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases within one year of the balance sheet date.

+ References

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases within the third year following the balance sheet date.

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- Definition

This element represents the total of minimum sublease rentals, if any, to be received under noncancelable subleases within the second year following the balance sheet date.

+ References

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- Definition

The total of future contractually required payments on leases defined as operating.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 122

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph 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 Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

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-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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- Definition

For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date relating to leases defined as operating.

+ References

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the fifth year of the balance sheet date relating to leases defined as operating.

+ References

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the fourth year of the balance sheet date relating to leases defined as operating.

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- Definition

For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the third year of the balance sheet date relating to leases defined as operating.

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- Definition

For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the second year of the balance sheet date relating to leases defined as operating.

+ References

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- Definition

For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due after the fifth year from the balance sheet date on leases defined as operating.

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