Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation 401(k) Plan (Details)

v2.4.0.8
Share-Based Compensation 401(k) Plan (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]      
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent 100.00%    
Defined Contribution Plan, Employer Matching Contribution, Percent 6.00%    
Defined Contribution Plan, Employers Matching Contribution $ 2.3 $ 1.4 $ 1.1