Pension and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

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
		2014		2013		2014		2013		2014		2013		2014		2013
Service cost	$	736	$	728	$	2	$	4	$	1,470	$	1,566	$	10	$	17
Interest cost and other		1,519		1,398		62		36		3,061		2,778		116		92
Expected return on plan assets		(1,601)		(1,463)		0		0		(3,208)		(2,941)		0		0
Actuarial loss amortization		759		991		26		(31)		1,548		1,972		32		16
Prior service cost amortization		(15)		104		0		0		851		132		0		0
Net periodic benefit cost	$	1,398	$	1,758	$	90	$	9	$	3,722	$	3,507	$	158	$	125