Pensions and Other Postretirement Benefit Plans (Schedule of Pension Plans with Projected Benefit Obligation and Accumulated Benefit Obligation in Excess of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Plans with projected benefit obligation in excess of plan assets:
Projected benefit obligation	$ 123,749	$ 183,765
Accumulated benefit obligation	120,287	169,396
Fair value of plan assets	80,447	131,626
Plans with accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	123,749	136,329
Accumulated benefit obligation	120,287	132,396
Fair value of plan assets	$ 80,447	$ 86,835