Goodwill and Other Intangible Assets Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Balance, beginning	$ 378,920
Translation and purchase accounting adjustments	(1,540)
Balance, ending	377,380
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	165,730
Translation and purchase accounting adjustments	(1,540)
Balance, ending	164,190
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning	0
Translation and purchase accounting adjustments	0
Balance, ending	0
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning	206,630
Translation and purchase accounting adjustments	0
Balance, ending	206,630
Engineered Components [Member]
Goodwill [Roll Forward]
Balance, beginning	6,560
Translation and purchase accounting adjustments	0
Balance, ending	$ 6,560