Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]
Balance, beginning	$ 215,360	$ 205,890
Goodwill from acquisitions	54,390	10,530
Foreign currency translation	1,190	(1,060)
Balance, ending	270,940	215,360
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	122,330	113,320
Goodwill from acquisitions	35,420	9,810
Foreign currency translation	1,230	(800)
Balance, ending	158,980	122,330
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning	48,720	48,260
Goodwill from acquisitions	15,500	720
Foreign currency translation	(10)	(260)
Balance, ending	64,210	48,720
Aerospace & Defense [Member]
Goodwill [Roll Forward]
Balance, beginning	41,130	41,130
Goodwill from acquisitions	0	0
Foreign currency translation	0	0
Balance, ending	41,130	41,130
Engineered Components [Member]
Goodwill [Roll Forward]
Balance, beginning	3,180	3,180
Goodwill from acquisitions	0	0
Foreign currency translation	0	0
Balance, ending	3,180	3,180
Cequent Asia Pacific [Member]
Goodwill [Roll Forward]
Balance, beginning	0	0
Goodwill from acquisitions	0	0
Foreign currency translation	0	0
Balance, ending	0	0
Cequent Americas [Member]
Goodwill [Roll Forward]
Balance, beginning	0	0
Goodwill from acquisitions	3,470	0
Foreign currency translation	(30)	0
Balance, ending	$ 3,440	$ 0