Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details)

v2.4.0.8
Benefit Plans (Details) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Pension Benefits [Member]
Sep. 30, 2013
Pension Benefits [Member]
Sep. 30, 2014
Pension Benefits [Member]
Sep. 30, 2013
Pension Benefits [Member]
Sep. 30, 2014
Post Retirement Benefits [Member]
Sep. 30, 2013
Post Retirement Benefits [Member]
Sep. 30, 2014
Post Retirement Benefits [Member]
Sep. 30, 2013
Post Retirement Benefits [Member]
Components of net periodic benefit expense [Abstract]                    
Service cost     $ 435,000 $ 5,428,000 $ 1,305,000 $ 19,696,000 $ 0 $ 0 $ 0 $ 0
Interest cost     8,099,000 7,749,000 24,299,000 22,363,000 258,000 216,000 776,000 647,000
Expected return on plan assets     (11,446,000) (11,768,000) (34,338,000) (35,950,000) 0 0 0 0
Amortization of transition asset     0 0 0 0 0 0 0 0
Amortization of prior service cost     0 0 0 (2,884,000) (338,000) (339,000) (1,016,000) (1,015,000)
Amortization of gains (losses)     1,442,000 1,738,000 4,326,000 21,306,000 (144,000) (150,000) (432,000) (450,000)
Curtailments     0 (34,613,000) 0 (34,613,000) 0 0 0 0
Settlements     2,500,000 2,000,000 7,500,000 5,000,000 0 0 0 0
Recognized net actuarial loss     0 1,061,000 0 1,061,000 0 0 0 0
Benefit cost     1,030,000 (28,405,000) 3,092,000 (4,021,000) (224,000) (273,000) (672,000) (818,000)
Change in Benefit Obligation [Roll Forward]                    
Service cost     435,000 5,428,000 1,305,000 19,696,000 0 0 0 0
Interest cost     8,099,000 7,749,000 24,299,000 22,363,000 258,000 216,000 776,000 647,000
Change in Fair Value of Plan Assets [Abstract]                    
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance 652,223,000 649,020,000                
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance $ 652,223,000 $ 649,020,000