XML 131 R106.htm IDEA: XBRL DOCUMENT v2.4.1.9
Employee Stock and Incentive Plans - Share-Based Compensation Expense (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share-Based Compensation Expense [Line Items]      
Share-Based Compensation Expense $ 2.3us-gaap_AllocatedShareBasedCompensationExpense $ 2.4us-gaap_AllocatedShareBasedCompensationExpense $ 2.1us-gaap_AllocatedShareBasedCompensationExpense
Income Tax Benefit 1.0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 1.0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 0.9us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Capitalized Share-Based Compensation Expense 0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount 0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount 0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
Performance Shares [Member]      
Share-Based Compensation Expense [Line Items]      
Share-Based Compensation Expense 1.6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
1.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
1.4us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
Unrecognized Compensation Cost 1.8us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
   
Weighted Average Period for Recognition 1 year 7 months 12 days    
Restricted Stock Units [Member]      
Share-Based Compensation Expense [Line Items]      
Share-Based Compensation Expense 0.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
0.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
0.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Unrecognized Compensation Cost $ 0.7us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Weighted Average Period for Recognition 1 year 8 months 12 days