XML 25 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Share-Based Compensation (Details 7) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2014
Incentive Unit Award
Jun. 30, 2014
Incentive Unit Award
trading_day
Jun. 30, 2014
Incentive Unit Award
Personnel Accruals
Share-Based Compensation          
Vesting period       3 years  
Vesting rights percentage       33.33%  
Number of share right to receive cash payment on vesting equal to fair market value is received per award       1  
Period for determination of cash payment value       10  
Unrecognized compensation cost     $ 4.0 $ 4.0  
Weighted-average period for amortization of unrecognized compensation cost       1 year 6 months  
Compensation expense     0.8 1.6  
Liability for unvested restricted share awards $ 43.7 $ 45.8     $ 1.6