Employee Benefit Plans Plans with Benefit Obligations in Excess of Assets Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	$ (20,200)	$ (36,320)
Benefit obligation	(37,430)	(37,660)
Plan assets	30,000	25,770
Benefit obligation in excess of plan assets	(7,430)	(11,890)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	(810)	(970)
Benefit obligation	(810)	(970)
Plan assets	0	0
Benefit obligation in excess of plan assets	$ (810)	$ (970)