v2.4.0.8
Employee Benefit Plans (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
pension_plan
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Number of Union Pension Plans 2    
Defined Benefit Plan, Fair Value of Plan Assets $ 100,556,000 $ 87,106,000  
Defined contribution plan, expenses 7,100,000 6,500,000 6,200,000
Defined benefit plan, assumed rate of increase in health care cost trend rate for 2013 6.00%    
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate 4.70%    
Pension Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Accumulated Benefit Obligation 103,466,000 101,233,000  
Defined Benefit Plan, Fair Value of Plan Assets 100,556,000 87,106,000 70,052,000
Actuarial loss (14,121,000) 15,975,000  
Plan amendment 0 0  
Defined Benefit Plan, Future Amortization of Gain (Loss) 2,500,000    
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) 100,000    
Contributions estimated to be paid 19,800,000    
Other Postretirement Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0 0
Actuarial loss (2,675,000) 4,751,000  
Plan amendment 0 16,020,000  
Defined Benefit Plan, Future Amortization of Gain (Loss) 800,000    
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) (3,700,000)    
Contributions estimated to be paid 500,000    
Debt Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 67.00% 67.00%  
Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 30.00% 30.00%  
Scenario, Plan [Member] | Debt Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 70.00%    
Scenario, Plan [Member] | Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 30.00%    
Unionized Employees Concentration Risk [Member] | Pension Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Accumulated Benefit Obligation 41,100,000    
Defined Benefit Plan, Fair Value of Plan Assets $ 36,600,000