Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Goodwill [Roll Forward]
Balance, beginning	$ 215,360
Goodwill from acquisitions	53,090
Foreign currency translation	810
Balance, ending	269,260
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	122,330
Goodwill from acquisitions	35,390
Foreign currency translation	590
Balance, ending	158,310
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning	48,720
Goodwill from acquisitions	14,200
Foreign currency translation	220
Balance, ending	63,140
Aerospace & Defense [Member]
Goodwill [Roll Forward]
Balance, beginning	41,130
Goodwill from acquisitions	0
Foreign currency translation	0
Balance, ending	41,130
Engineered Components [Member]
Goodwill [Roll Forward]
Balance, beginning	3,180
Goodwill from acquisitions	0
Foreign currency translation	0
Balance, ending	3,180
Cequent Asia Pacific [Member]
Goodwill [Roll Forward]
Balance, beginning	0
Goodwill from acquisitions	0
Foreign currency translation	0
Balance, ending	0
Cequent Americas [Member]
Goodwill [Roll Forward]
Balance, beginning	0
Goodwill from acquisitions	3,500
Foreign currency translation	0
Balance, ending	$ 3,500