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Components of Income Tax Provision From Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current                      
Current, Federal                 $ 21,172 $ 30,048 $ 17,310
Current, State                 6,268 5,844 906
Current, Foreign                 7,021 5,977 7,468
Current, Total                 34,461 41,869 25,684
Deferred                      
Deferred, Federal                 7,553 11,858 14,439
Deferred, State                 (719) 564 3,614
Deferred, Foreign                 (1,195) (5,067) (2,330)
Deferred, Total                 5,639 7,355 15,723
Income tax provision $ 13,728 $ 12,251 $ 3,527 $ 10,594 $ 14,723 $ 16,150 $ 6,740 $ 11,611 $ 40,100 $ 49,224 $ 41,407