Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 367,740	$ 337,780
Operating profit (loss)	32,590	23,740
Packaging [Member]
Segment Reporting Information [Line Items]
Net sales	81,430	74,350
Operating profit (loss)	18,360	14,630
Energy [Member]
Segment Reporting Information [Line Items]
Net sales	52,780	54,920
Operating profit (loss)	2,600	5,870
Aerospace & Defense [Member]
Segment Reporting Information [Line Items]
Net sales	29,540	20,970
Operating profit (loss)	5,180	3,750
Engineered Components [Member]
Segment Reporting Information [Line Items]
Net sales	55,430	46,270
Operating profit (loss)	7,880	5,700
Cequent Asia Pacific Europe Africa [Member]
Segment Reporting Information [Line Items]
Net sales	39,470	32,090
Operating profit (loss)	2,500	3,180
Cequent Americas [Member]
Segment Reporting Information [Line Items]
Net sales	109,090	109,180
Operating profit (loss)	5,710	700
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (9,640)	$ (10,090)