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Commitments And Contingencies (Schedule Of Minimum Lease Payments Under Non-Cancelable Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Commitments And Contingencies [Abstract]
2012	$ 32,103
2013	28,384
2014	20,465
2015	13,049
2016	8,676
Thereafter	45,413
Total	$ 148,090

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

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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 one year of the balance sheet date relating to leases defined as operating.

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