Employee Benefit Plans AOCI Amortization in Next Fiscal Year (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of loss	$ 10,448
Amortization of prior service cost	1,167
Amortization of negative plan amendment	0
Total amortization of AOCI loss	11,615
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of loss	640
Amortization of prior service cost	17
Amortization of negative plan amendment	(282)
Total amortization of AOCI loss	$ 375