Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 366,490	$ 365,390
Operating profit (loss)	27,500	32,270
Packaging [Member]
Segment Reporting Information [Line Items]
Net sales	78,960	81,430
Operating profit (loss)	17,510	18,360
Energy [Member]
Segment Reporting Information [Line Items]
Net sales	51,160	52,780
Operating profit (loss)	340	2,600
Aerospace [Member]
Segment Reporting Information [Line Items]
Net sales	45,740	27,190
Operating profit (loss)	8,080	4,860
Engineered Components [Member]
Segment Reporting Information [Line Items]
Net sales	48,270	55,430
Operating profit (loss)	5,970	7,880
Cequent Asia Pacific Europe Africa [Member]
Segment Reporting Information [Line Items]
Net sales	35,820	39,470
Operating profit (loss)	2,250	2,500
Cequent Americas [Member]
Segment Reporting Information [Line Items]
Net sales	106,540	109,090
Operating profit (loss)	5,910	5,710
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	(8,960)	(9,640)
Cequent seperation costs [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (3,600)	$ 0