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Other Intangible Assets, Net (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Maximum
Dec. 31, 2012
Minimum
Dec. 31, 2012
Core Technology
Dec. 31, 2011
Core Technology
Dec. 31, 2012
Core Technology
Maximum
Dec. 31, 2012
Core Technology
Minimum
Dec. 31, 2012
Trademarks And Tradenames
Dec. 31, 2011
Trademarks And Tradenames
Dec. 31, 2012
Trademarks And Tradenames
Maximum
Dec. 31, 2012
Trademarks And Tradenames
Minimum
Dec. 31, 2012
Customer Relationships
Dec. 31, 2011
Customer Relationships
Dec. 31, 2012
Customer Relationships
Maximum
Dec. 31, 2012
Customer Relationships
Minimum
Finite-Lived Intangible Assets [Line Items]                                
Useful life     20 years 2 years     8 years 3 years     20 years 3 years     6 years 2 years
Original amount $ 213,381 $ 238,821     $ 131,797 $ 143,748     $ 26,476 $ 26,476     $ 55,108 $ 68,597    
Accumulated amortization 194,170 212,582     129,767 137,736     10,738 9,070     53,665 65,776    
Other intangible assets, net $ 19,211 $ 26,239     $ 2,030 $ 6,012     $ 15,738 $ 17,406     $ 1,443 $ 2,821