XML 123 R95.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-Based Compensation Restricted Stock Units (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Restricted Stock [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 11.48 $ 8.46 $ 5.42 $ 6.72
Allocated Share-based Compensation Expense $ 2.1 $ 1.8 $ 1.5  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Beginning balance 625,049 836,877 867,413  
Incentive shares granted 108,174 202,009 149,239  
Incentive share awards cancelled 0 0 0  
Ending balance 512,085 625,049 836,877  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 20.49 $ 8.85 $ 10.14  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease) (221,138) (413,837) (179,775)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value $ 7.37 $ 2.50 $ 15.60  
Restricted Stock Units (RSUs) [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 2.7 2.3 2.3  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 3.1      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Beginning balance 960,388 1,112,868 955,936  
Incentive shares granted 166,474 330,426 336,816  
Incentive share awards vested (350,107) (407,909) (121,500)  
Incentive share awards cancelled (24,160) (74,997) (58,384)  
Ending balance 752,595 960,388 1,112,868  
Incentive share awards outstanding Weighted Average Contractual Term (in years) 10 months 24 days      
Incentive share awards outstanding Aggregate Intrinsic Value (in millions) $ 13,900,000      
Vested and expected to vest 714965 [1]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 10 months 24 days [1]      
Vested and expected to vest Weighted Average Contractual Term (in years) 13.2 [1]      
Incentive share awards exercisable 0      
Incentive share awards exercisable Weighted Average Contractual Term (in years) 0      
Incentive share awards exercisable Aggregate Intrinsic Value (in millions) $ 0      
[1] Incentive shares expected to vest based upon historical forfeitures rate