Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Operating Profit (Loss)	$ 120,530	$ 127,870	$ 131,320
Capital Expenditures	39,490	46,120	32,620
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	1,394,860	1,272,910	1,083,960
Operating Profit (Loss)	120,530	127,870	131,320
Capital Expenditures	39,490	46,120	28,380
Depreciation and Amortization	50,580	44,870	38,290
Packaging [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	313,220	275,160	185,240
Operating Profit (Loss)	83,770	57,550	48,060
Capital Expenditures	11,010	15,470	5,420
Depreciation and Amortization	18,960	17,970	13,200
Energy [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	205,580	190,210	166,780
Operating Profit (Loss)	8,620	17,810	19,740
Capital Expenditures	5,250	5,210	3,710
Depreciation and Amortization	3,820	3,600	2,790
Aerospace & Defense [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	101,790	78,580	78,590
Operating Profit (Loss)	23,760	20,820	18,640
Capital Expenditures	4,810	3,210	2,410
Depreciation and Amortization	3,820	2,660	2,580
Engineered Components [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	185,370	200,000	175,350
Operating Profit (Loss)	19,450	27,990	27,620
Capital Expenditures	2,190	4,090	5,490
Depreciation and Amortization	4,270	3,860	3,540
Cequent Asia Pacific [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	151,620	128,560	94,290
Operating Profit (Loss)	13,920	12,300	13,900
Capital Expenditures	9,650	8,290	8,780
Depreciation and Amortization	5,770	3,840	3,860
Cequent Americas [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	437,280	400,400	383,710
Operating Profit (Loss)	8,850	27,420	32,730
Capital Expenditures	5,610	9,670	2,400
Depreciation and Amortization	13,680	12,780	12,170
Corporate [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(37,840)	(36,020)	(29,370)
Capital Expenditures	970	180	170
Depreciation and Amortization	$ 260	$ 160	$ 150