Contingencies (Schedule of Changes in Claims) (Details) (Asbestos Litigation [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jul. 19, 2013 claims	Dec. 31, 2012 claims	Dec. 31, 2011 claims	Dec. 31, 2010 claims	Dec. 31, 2009 claims	Dec. 31, 2008 claims	Dec. 31, 2007 claims	Dec. 31, 2006 claims	Dec. 31, 2005 claims
Loss Contingencies [Line Items]
Opening Number of Claims	4,463	4,446	5,170	8,945	18,385	18,798	19,416	24,451	29,411
Claims Dismissed, Settled, or Resolved	215	90	789	3,963	9,482	523	808	6,841	6,257
New Claims	47	107	65	188	42	110	190	1,806	1,297
Closing Number of Claims	4,295	4,463	4,446	5,170	8,945	18,385	18,798	19,416	24,451
Amounts Paid (thousands) to Settle or Resolve ($)	$ 3	$ 530	$ 1,111	$ 159	$ 88	$ 52	$ 15	$ 3,879	$ 504
Brandon Drying Fabrics, Inc. [Member]
Loss Contingencies [Line Items]
Opening Number of Claims	7,867	7,877	7,869	7,907	8,664	8,740	9,114	9,566	9,985
Claims Dismissed, Settled, or Resolved	54	12	3	47	760	86	462	1,182	642
New Claims	2	2	11	9	3	10	88	730	223
Closing Number of Claims	7,815	7,867	7,877	7,869	7,907	8,664	8,740	9,114	9,566
Amounts Paid (thousands) to Settle or Resolve ($)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0