Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Awards (Stock-Based Compensation Expense) (Detail)

v2.4.0.6
Stock-Based Awards (Stock-Based Compensation Expense) (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
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense before income taxes $ 4,628 $ 6,109 $ 15,278 $ 19,392
Income tax benefit (1,574) (2,070) (5,220) (6,280)
Stock-based compensation expense after income taxes 3,054 4,039 10,058 13,112
Selling and Marketing Expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense 932 1,120 2,744 3,480
General and Administrative Expense [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 3,696 $ 4,989 $ 12,534 $ 15,912