Miscellaneous Income, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Other Income and Expenses [Abstract]
Contract settlement	$ 64		$ 0		$ 2,972		$ 0
Gains on sales of operating property and equipment	135		96		2,725		636
Business interruption insurance recoveries	0		819		756		2,624
Foreign currency translation benefit	0	[1]	0	[1]	0	[1]	1,904	[1]
Rabbi trust investment (expense) income	(177)		1,247		1,400		2,878
Other, net	974		1,285		3,353		3,550
Total	$ 996		$ 3,447		$ 11,206		$ 11,592

[1] Refer to Note (O), "Other Items Impacting Comparability," for additional information.