v2.4.0.6
Segment Data And Related Information (Geographic Distribution Of The Company's Net Revenues And Operating Income And Total Assets) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Segment Reporting Information [Line Items]          
Total net revenues $ 575,196 $ 465,523 $ 1,329,058 $ 1,069,558  
Total operating income 90,980 74,965 127,103 107,465  
Interest expense, net (1,303) (1,552) (3,978) (2,428)  
Other income (expense), net (31) (1,193) 561 (2,065)  
Income before income taxes 89,646 72,220 123,686 102,972  
Total assets 1,078,639 900,138 1,078,639 900,138 919,210
North America [Member]
          
Segment Reporting Information [Line Items]          
Total net revenues 543,089 433,646 1,254,508 1,006,194  
Total operating income 87,739 69,618 121,012 100,829  
Total assets 995,984 831,232 995,984 831,232 842,121
Other Foreign Countries [Member]
          
Segment Reporting Information [Line Items]          
Total net revenues 32,107 31,877 74,550 63,364  
Total operating income 3,241 5,347 6,091 6,636  
Total assets $ 82,655 $ 68,906 $ 82,655 $ 68,906 $ 77,089