XML 70 R68.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Summary Of RSUs Under The 2007 Plan) (Details) (2007 Incentive Plan [Member], Restricted Stock Units (RSUs) [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
2007 Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
     
Number of Shares [Roll Forward]      
Restricted Stock Units outstanding, beginning balance 495 404 359
Granted, Shares 260 196 149
Released, Shares (140) (91) (95)
Forfeited, Shares (10) (14) (9)
Restricted Stock Units outstanding, ending balance 605 495 404
Weighted Average Price [Roll Forward]      
Beginning balance, Weighted average price $ 50.76    
Granted, Weighted average price $ 65.98    
Released, Weighted average price $ 43.55    
Forfeited, weighted average price $ 59.07    
Ending balance, Weighted average price $ 57.87 $ 50.76  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]      
Expected to vest, shares 551 438 343
Ending balance, Weighted average remaining contractual term (years) 2 years 3 months 18 days    
Expected to Vest, Weighted average remaining contractual term (years) 2 years 1 month 6 days    
Ending balance, Aggregate intrinsic value $ 54,774    
Expected to Vest, Aggregate intrinsic value $ 49,872