Pension and Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2013

General Discussion Of Pension And Other Postretirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Three Months Ended September 30,								Nine Months Ended September 30,
					Other								Other
					Postretirement								Postretirement
	Pension Benefits				Benefits				Pension Benefits				Benefits
		2013		2012		2013		2012		2013		2012		2013		2012
Service cost	$	789	$	605	$	9	$	5	$	2,355	$	1,843	$	26	$	14
Interest cost and other		1,394		1,442		46		71		4,172		4,369		138		213
Expected return on plan assets		(1,476)		(1,358)		0		0		(4,417)		(4,101)		0		0
Actuarial loss amortization		989		687		8		31		2,961		2,067		24		92
Prior service cost amortization		23		28		0		0		155		84		0		0
Net periodic benefit cost	$	1,719	$	1,404	$	63	$	107	$	5,226	$	4,262	$	188	$	319