Pension and Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2013

Pension Plan [Member]

Summary of Net (Benefit) Costs [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2013		2012		2013		2012
Service cost	$	12,710	$	8,701	$	26,075	$	17,808
Interest cost		14,243		14,829		28,534		29,420
Expected return on assets		(25,467)		(24,510)		(51,789)		(48,522)
Amortization of prior service cost		909		919		1,818		1,856
Recognized actuarial loss		1,797		2,503		3,944		4,072
Net Periodic Cost		4,192		2,442		8,582		4,634
Early retirement programs expense		8,442		―		22,700		1,022
Total Cost	$	12,634	$	2,442	$	31,282	$	5,656

Allocation of the Assets of the Company's Pension Plans [Table Text Block]

	As of
	June 30,			December 31,
	2013			2012
U.S. equities		62	%		64	%
U.S. fixed income		13	%		13	%
International equities		25	%		23	%
		100	%		100	%

Supplemental Executive Retirement Plan (SERP) [Member]

Summary of Net (Benefit) Costs [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2013		2012		2013		2012
Service cost	$	430	$	366	$	859	$	733
Interest cost		1,023		1,061		2,046		2,121
Amortization of prior service cost		13		13		27		27
Recognized actuarial loss		711		459		1,422		917
Total Cost	$	2,177	$	1,899	$	4,354	$	3,798

Other Postretirement Plans [Member]

Summary of Net (Benefit) Costs [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2013		2012		2013		2012
Service cost	$	728	$	779	$	1,455	$	1,557
Interest cost		507		684		1,017		1,368
Amortization of prior service credit		(1,306)		(1,402)		(2,666)		(2,804)
Recognized actuarial gain		(504)		(370)		(1,045)		(740)
Net Periodic Benefit		(575)		(309)		(1,239)		(619)
Settlement gain		―		―		(3,471)		―
Total Periodic Benefit	$	(575)	$	(309)	$	(4,710)	$	(619)