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Commitments And Contingencies (Minimum Lease Payments) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Operating Leases [Line Items]
Remainder of 2012	$ 16,661
2013	43,268
2014	23,965
2015	17,221
2016	11,332
Thereafter	20,121
Total minimum lease payments	$ 132,568

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