Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 380,120	$ 354,910	$ 1,148,510	$ 1,068,410
Operating profit (loss)	32,270	43,580	108,950	109,150
Packaging [Member]
Segment Reporting Information [Line Items]
Net sales	89,320	82,010	257,000	235,000
Operating profit (loss)	20,770	31,320	59,670	65,550
Energy [Member]
Segment Reporting Information [Line Items]
Net sales	50,290	47,680	155,390	161,420
Operating profit (loss)	(1,100)	1,450	870	12,530
Aerospace [Member]
Segment Reporting Information [Line Items]
Net sales	27,410	25,830	86,420	68,230
Operating profit (loss)	3,870	6,350	14,390	15,810
Engineered Components [Member]
Segment Reporting Information [Line Items]
Net sales	55,310	47,540	165,060	143,830
Operating profit (loss)	8,090	2,860	24,920	14,450
Cequent Asia Pacific Europe Africa [Member]
Segment Reporting Information [Line Items]
Net sales	44,290	40,950	127,560	111,330
Operating profit (loss)	3,210	3,570	7,930	9,300
Cequent Americas [Member]
Segment Reporting Information [Line Items]
Net sales	113,500	110,900	357,080	348,600
Operating profit (loss)	8,660	7,440	31,310	21,030
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (11,230)	$ (9,410)	$ (30,140)	$ (29,520)