XML 95 R69.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock Option Plans - Performance Awards (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Exercise Price, Outstanding (in usd per share) $ 23.07 $ 12.49  
Share-based compensation expense $ 20,840,000 $ 12,207,000 $ 4,502,000
Performance awards
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 4 years    
Award expiration period 10 years    
Share-based compensation expense 300,000 400,000  
Unrecognized compensation expense $ 400,000    
Unrecognized compensation expense, weighted-average period of recognition 2 years    
Performance based stock options
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Exercise Price, Outstanding (in usd per share) $ 27.75    
Weighted Average Exercise Price, Expected to Vest 53,714    
Performance based stock options | Minimum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Exercise Price, Expected to Vest 179,047    
Performance based restricted stock units
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Exercise Price, Expected to Vest 12,892    
Performance based restricted stock units | Maximum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Exercise Price, Expected to Vest 43,066