Commitments And Contingencies (Schedule Of Future Minimum Rental Revenues Under Subleases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Loss Contingencies [Line Items]
2013	$ 41,562
2014	35,831
2015	29,230
2016	25,165
2017	20,090
Thereafter	81,261
Total	$ 233,139

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (b)

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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(ii)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due current.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due in five years.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due in four years.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due in three years.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due in two years.

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- Definition

Operating leases future minimum payments due future minimum sublease rentals due thereafter.

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