Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

Net periodic benefit cost (income) for our pension and other postretirement plans consists of the following (in thousands):

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended June 30,						Three Months Ended June 30,
	2013			2012			2013			2012
Components of Net Periodic Benefit Cost (Income)
Service cost	$	3,294		$	3,006		$	115		$	121
Interest cost	5,736			5,916			222			281
Expected return on plan assets	(8,121		)	(7,490		)	(256		)	(256		)
Amortization of prior service cost	61			61			(499		)	(499		)
Recognized actuarial loss	3,072			2,089			261			175
Net Periodic Benefit Cost (Income)	$	4,042		$	3,582		$	(157	)	$	(178	)

	Pension Benefits						Other Postretirement Benefits
	Six Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Components of Net Periodic Benefit Cost (Income)
Service cost	$	6,733		$	6,030		$	271		$	244
Interest cost	11,360			11,851			439			566
Expected return on plan assets	(16,246		)	(14,996		)	(510		)	(513		)
Amortization of prior service cost	123			123			(999		)	(999		)
Recognized actuarial loss	5,824			4,194			486			359
Net Periodic Benefit Cost (Income)	$	7,794		$	7,202		$	(313	)	$	(343	)