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Income Taxes - Provision for Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current:      
Federal $ 109,272 $ 42,874 $ 39,818
State 12,397 11,998 9,650
Foreign 14,657 7,668 6,260
Total current tax provision 136,326 62,540 55,728
Federal 16,134 4,487 31,539
State 1,627 965 2,062
Foreign 4,772 (4,896) (445)
Total deferred tax provision 22,533 556 33,156
Total provision for income taxes $ 158,859 $ 63,096 $ 88,884