Pension and Other Postretirement Benefits - Information About Accumulated and Projected Benefit Obligations In Excess of Plan Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	$ 152,114	$ 151,687
Accumulated Benefit Obligation	150,374	145,836
Fair Value of Plan Assets	119,309	106,900
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	152,114	151,687
Fair Value of Plan Assets	119,309	106,900
Domestic [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	66,369	70,407
Accumulated Benefit Obligation	66,369	69,951
Fair Value of Plan Assets	50,650	45,991
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	66,369	70,407
Fair Value of Plan Assets	50,650	45,991
Foreign [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	85,745	81,280
Accumulated Benefit Obligation	84,005	75,885
Fair Value of Plan Assets	68,659	60,909
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	85,745	81,280
Fair Value of Plan Assets	$ 68,659	$ 60,909