Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2013

General Discussion Of Pension And Other Postretirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Three Months Ended March 31,
					Other
					Postretirement
	Pension Benefits				Benefits
		2013		2012		2013		2012
Service cost	$	838	$	624	$	13	$	4
Interest cost and other		1,380		1,470		56		71
Expected return on plan assets		(1,478)		(1,375)		0		0
Actuarial loss amortization		981		691		47		31
Prior service cost amortization		28		28		0		0
Net periodic benefit cost	$	1,749	$	1,438	$	116	$	106