Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Goodwill [Roll Forward]
Balance, beginning	$ 270,940
Goodwill from acquisitions	18,080
Foreign currency translation	(3,660)
Balance, ending	285,360
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	158,980
Goodwill from acquisitions	0
Foreign currency translation	(1,500)
Balance, ending	157,480
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning	64,210
Goodwill from acquisitions	9,660
Foreign currency translation	(1,870)
Balance, ending	72,000
Aerospace & Defense [Member]
Goodwill [Roll Forward]
Balance, beginning	41,130
Goodwill from acquisitions	8,420
Foreign currency translation	0
Balance, ending	49,550
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 Europe Africa [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	3,440
Goodwill from acquisitions	0
Foreign currency translation	(290)
Balance, ending	$ 3,150