XML 74 R49.htm IDEA: XBRL DOCUMENT v2.4.0.6
Shareholders' Equity (Details 4) (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
RSUs
        
Awards Outstanding        
Balance at the beginning of the period (in shares) 901 1,218 901  
Granted (in shares) 369 224 343  
Issued (in shares) (275) (515) (11)  
Forfeited (in shares) (14) (26) (15)  
Balance at the end of the period (in shares) 981 901 1,218 901
Balance at the beginning of the period (in dollars per share) $ 25.59 $ 18.34 $ 14.52  
Granted (in dollars per share) $ 40.98 $ 38.01 $ 28.32  
Issued (in dollars per share) $ (16.12) $ (14.03) $ (14.03)  
Forfeited (in dollars per share) $ (30.74) $ (16.19) $ (19.91)  
Balance at the end of the period (in dollars per share) $ 34.06 $ 25.59 $ 18.34 $ 14.52
Aggregate Intrinsic Value $ 39,888,000 $ 37,373,000 $ 44,038,000 $ 24,131,000
Weighted Average Remaining Vesting Term 1 year 6 months 1 year 8 months 12 days 2 years 7 months 6 days 2 years 6 months
Aggregate intrinsic value of awards issued 11,600,000 19,500,000 300,000  
SSAR Awards
        
Awards Outstanding        
Balance at the beginning of the period (in shares) 517 1,012 2,061  
Granted (in shares)     36  
Exercised (in shares) (95) (486) (1,085)  
Forfeited (in shares)   (9)    
Balance at the end of the period (in shares) 422 517 1,012 2,061
Balance at the beginning of the period (in dollars per share) $ 15.06 $ 16.10 $ 16.70  
Granted (in dollars per share)     $ 24.89  
Exercised (in dollars per share) $ (16.76) $ (16.56) $ (17.52)  
Forfeited (in dollars per share)   $ (12.39)    
Balance at the end of the period (in dollars per share) $ 15.30 $ 15.06 $ 16.10 $ 16.70
Aggregate Intrinsic Value 10,927,000 13,921,000 20,346,000 20,914,000
Weighted Average Remaining Vesting Term 7 months 6 days 1 year 4 months 24 days 1 year 10 months 24 days 2 years 1 month 6 days
SSAR Awards Exercisable        
SSAR Awards (in shares) 322 410 480 1,419
Weighted Average Exercise Price (in dollars per share) $ 16.02 $ 15.39 $ 18.29 $ 17.62
Aggregate Intrinsic Value 8,108,000 10,895,000 8,619,000 13,109,000
Weighted Average Remaining Contractual Life 8 months 12 days 1 year 4 months 24 days 1 year 3 months 18 days 1 year 7 months 6 days
Aggregate intrinsic value of SSAR Awards exercised $ 2,100,000 $ 10,200,000 $ 13,200,000  
Assumptions used to determine weighted average fair value        
Weighted average fair value of SSAR Awards (in dollars per share)     $ 10.97  
Expected term     4 years  
Volatility (as a percent)     58.00%  
Dividend yields (as a percent)     0.50%  
Risk-free interest rates (as a percent)     1.70%