XML 106 R103.htm IDEA: XBRL DOCUMENT v2.4.0.8
Retirement Plans (Funded Status of Retirement Income Plan and Retirement Life Plan) (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Change In Benefit Obligation [Abstract]        
Defined Benefit Plan, Curtailments     $ 0  
Retirement Income Plan [Member]
        
Net actuarial gain (loss), Gross   59,430,000 (25,906,000) (16,575,000)
Change In Benefit Obligation [Abstract]        
Benefit obligation, beginning of year 302,647,000 302,647,000 254,009,000  
Service cost   7,517,000 8,091,000 7,575,000
Interest cost   12,477,000 12,981,000 12,349,000
Actuarial losses   (29,656,000) 33,596,000  
Benefits paid   (6,978,000) (6,030,000)  
Benefit obligation, end of year   256,404,000 302,647,000 254,009,000
Change In Fair Value Of Assets Abstract        
Fair value of assets, beginning of year 207,150,000 207,150,000 182,614,000  
Actual return on plan assets, net of expenses   15,925,000 21,896,000  
Contributions by the employer to funded plans   9,600,000 8,550,000  
Contributions by the employer to unfunded plans   120,000 120,000  
Benefits paid fair value   (6,978,000) (6,030,000)  
Fair value of assets, end of year   225,817,000 207,150,000 182,614,000
Funded status   (30,587,000) (95,497,000)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]        
Liabilities   (30,587,000) (95,497,000)  
Net pension liability, end of year   (30,587,000) (95,497,000)  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]        
Prior service cost   0 26,000  
Net actuarial loss   39,640,000 103,365,000  
Total   39,640,000 103,391,000  
Weighted-Average Liability Asumptions        
Discount rate   5.16% 4.42% [1]  
Rate of compensation increase   4.00% 4.00%  
Accumulated benefit obligation   250,546,000 265,899,000  
Retirement Life Plan [Member]
        
Net actuarial gain (loss), Gross   224,000 (660,000) (224,000)
Change In Benefit Obligation [Abstract]        
Benefit obligation, beginning of year 6,471,000 6,471,000 5,897,000  
Service cost   0 0 0
Interest cost   283,000 302,000 306,000
Actuarial losses   (224,000) 660,000  
Benefits paid   (329,000) (388,000)  
Defined Benefit Plan, Curtailments   0 0  
Benefit obligation, end of year   6,201,000 6,471,000 5,897,000
Change In Fair Value Of Assets Abstract        
Fair value of assets, beginning of year 0 0 0  
Actual return on plan assets, net of expenses   0 0  
Contributions by the employer to funded plans   0 0  
Contributions by the employer to unfunded plans   0 0  
Benefits paid fair value   0 0  
Fair value of assets, end of year   0 0 0
Funded status   (6,201,000) (6,471,000)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]        
Liabilities   (6,201,000) (6,471,000)  
Net pension liability, end of year   (6,201,000) (6,471,000)  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]        
Prior service cost   0 0  
Net actuarial loss   1,363,000 1,667,000  
Total   1,363,000 1,667,000  
Weighted-Average Liability Asumptions        
Discount rate   4.85% 4.42%  
Rate of compensation increase   0.00% 0.00%  
Accumulated benefit obligation   0 0  
FundedStatusOfRetirementIncomePlan [Member] | Retirement Income Plan [Member]
        
Change In Benefit Obligation [Abstract]        
Defined Benefit Plan, Curtailments   (29,603,000)    
Accumulated Defined Benefit Plans Adjustment [Member]
        
Net actuarial gain (loss), Gross $ 44,000,000 $ 59,654,000 $ (26,566,000) $ (16,799,000)
[1] Discount rate for the Retirement Income Plan changed from 4.42% as of December 31, 2012 to 4.66% as of March 31, 2013 due to the remeasurement that was performed with the curtailment of the Plan.