Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance, beginning		$ 460,080	$ 302,480
Goodwill, Acquired During Period			164,860
Goodwill, Other Changes		(1,180)
Goodwill, Impairment Loss		(74,110)
Foreign currency translation		(5,870)	(7,260)
Balance, ending	$ 378,920	378,920	460,080
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning		169,350	158,060
Goodwill, Acquired During Period		0	15,810
Goodwill, Impairment Loss		0
Foreign currency translation		(3,620)	(4,520)
Balance, ending	165,730	165,730	169,350
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning		210,130	61,080
Goodwill, Acquired During Period			149,050
Goodwill, Other Changes	(3,500)	(3,500)
Goodwill, Impairment Loss		0
Foreign currency translation		0	0
Balance, ending	206,630	206,630	210,130
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning		73,180	75,920
Goodwill, Acquired During Period		0	0
Goodwill, Impairment Loss		(70,930)
Foreign currency translation		(2,250)	(2,740)
Balance, ending	0	0	73,180
Engineered Components [Member]
Goodwill [Roll Forward]
Balance, beginning		7,420	7,420
Goodwill, Acquired During Period		2,320	0
Goodwill, Impairment Loss		(3,180)
Foreign currency translation		0	0
Balance, ending	$ 6,560	$ 6,560	$ 7,420