Pension and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2013

General Discussion Of Pension And Other Postretirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Three Months Ended June 30,								Six Months Ended June 30,
					Other								Other
					Postretirement								Postretirement
	Pension Benefits				Benefits				Pension Benefits				Benefits
		2013		2012		2013		2012		2013		2012		2013		2012
Service cost	$	728	$	614	$	4	$	5	$	1,566	$	1,238	$	17	$	9
Interest cost and other		1,398		1,457		36		71		2,778		2,927		92		142
Expected return on plan assets		(1,463)		(1,368)		0		0		(2,941)		(2,743)		0		0
Actuarial loss amortization		991		689		(31)		30		1,972		1,380		16		61
Prior service cost amortization		104		28		0		0		132		56		0		0
Net periodic benefit cost	$	1,758	$	1,420	$	9	$	106	$	3,507	$	2,858	$	125	$	212