Annual report pursuant to Section 13 and 15(d)

Benefit Plans (Details 3)

v2.4.0.8
Benefit Plans (Details 3) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Amounts Recognized in Other Comprehensive Income (Loss) Before Tax      
Pretax, Balance, Beginning of Period $ 363,691 $ 285,177 $ 202,292
Net actuarial gains (losses) (13,106) 27,013 21,261
Pretax, Balance, End of Period 240,345 363,691 285,177
Net actuarial gains (losses) (13,106) 27,013 21,261
Amounts Recognized in Other Comprehensive Income (Loss), Tax      
Tax (expnese) Benefit, Balance, Beginning of Period 127,292 (99,813) (70,803)
Net Actuarial (loss) gain      
Amoritization included in net periodic benefit costs 4,588 (9,455) (7,441)
Transition Obligation      
Amoritization included in net periodic benefit costs 4,588 (9,455) (7,441)
Tax (expense) Benefit, Balance, End of Period (84,122) 127,292 (99,813)
Amounts Recognized in Other Comprehensive Income (Loss), after Tax [Abstract]      
After-Tax, Balance, Beginning of Period (236,399) (185,364) 131,489
Net actuarial (loss) gain      
Amortization included in net periodic benefit costs (8,518) 17,558 13,820
Prior Service Cost      
Amortization included in net periodic benefts costs (9,855) (25,788) (30,261)
Transition Obligation      
After-Tax, Balance, End of Period (156,223) (236,399) (185,364)
Transition Obligation [Member]
      
Amounts Recognized in Other Comprehensive Income (Loss) Before Tax      
Amounts Arising During the Year 0 0 0
Net actuarial gains (losses) 0 2 5
Amounts Arising During the Year 0 0 0
Net actuarial gains (losses) 0 2 5
Net Actuarial (loss) gain      
Amoritization included in net periodic benefit costs 0 0 (2)
Prior Service Cost      
Amounts Arising During the Year 0 0 0
Transition Obligation      
Amoritization included in net periodic benefit costs 0 0 (2)
Prior Service Cost      
Net prior service cost arising during the period 0 0 0
Transition Obligation      
Amortization included in net periodic benefit costs 0 2 3
Prior Service Cost [Member]
      
Amounts Recognized in Other Comprehensive Income (Loss) Before Tax      
Amounts Arising During the Year 0 0 0
Net actuarial gains (losses) 24,514 6,865 6,811
Amounts Arising During the Year 0 0 0
Net actuarial gains (losses) 24,514 6,865 6,811
Prior Service Cost      
Amounts Arising During the Year 0 0 0
Amoritization included in net periodic benefit costs (8,580) (2,403) (2,384)
Prior Service Cost      
Net prior service cost arising during the period 0 0 0
Amortization included in net periodic benefts costs (15,934) (4,462) (4,427)
Net Actuarial (loss) gain [Member]
      
Amounts Recognized in Other Comprehensive Income (Loss) Before Tax      
Amounts Arising During the Year (118,666) 105,527 104,146
Net actuarial gains (losses) (29,194) (33,880) (28,077)
Amounts Arising During the Year (118,666) 105,527 104,146
Net actuarial gains (losses) (29,194) (33,880) (28,077)
Net Actuarial (loss) gain      
Amounts Arising During the Year 41,532 (36,934) (36,451)
Amoritization included in net periodic benefit costs 10,218 11,858 9,827
Transition Obligation      
Amoritization included in net periodic benefit costs 10,218 11,858 9,827
Net actuarial (loss) gain      
Amount arising during the period (77,134) 68,593 67,695
Amortization included in net periodic benefit costs $ (18,976) $ (22,022) $ (18,250)