Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Details 6)

v2.4.1.9
Share-Based Compensation and Other Compensation Matters (Details 6) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2012
Chief Financial Officer    
Defined Benefit Plan Disclosure [Line Items]    
Executive transition costs $ 1.1us-gaap_DefinedBenefitPlanSpecialTerminationBenefits
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefFinancialOfficerMember
 
Former Chief Executive Officer    
Defined Benefit Plan Disclosure [Line Items]    
Executive transition costs   $ 2.2us-gaap_DefinedBenefitPlanSpecialTerminationBenefits
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember