Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating Profit (Loss)	$ 124,550us-gaap_OperatingIncomeLoss	$ 119,600us-gaap_OperatingIncomeLoss	$ 128,070us-gaap_OperatingIncomeLoss
Capital Expenditures	34,450	39,490	46,120
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	1,499,080	1,388,600	1,267,510
Operating Profit (Loss)	124,550	119,600	128,070
Capital Expenditures	34,450	39,490	46,120
Depreciation and Amortization	56,470	50,550	44,840
Packaging [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	337,710	313,220	275,160
Operating Profit (Loss)	77,850	83,770	57,550
Capital Expenditures	13,730	11,010	15,470
Depreciation and Amortization	20,410	18,960	17,970
Energy [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	206,720	205,580	190,210
Operating Profit (Loss)	(6,660)	8,620	17,810
Capital Expenditures	2,690	5,250	5,210
Depreciation and Amortization	4,600	3,820	3,600
Aerospace [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	121,510	95,530	73,180
Operating Profit (Loss)	17,830	22,830	21,020
Capital Expenditures	4,430	4,810	3,210
Depreciation and Amortization	7,630	3,790	2,630
Engineered Components [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	221,360	185,370	200,000
Operating Profit (Loss)	34,080	19,450	27,990
Capital Expenditures	1,690	2,190	4,090
Depreciation and Amortization	4,460	4,270	3,860
Cequent Asia Pacific Europe Africa [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	165,110	151,620	128,560
Operating Profit (Loss)	7,860	13,920	12,300
Capital Expenditures	6,910	9,650	8,290
Depreciation and Amortization	7,520	5,770	3,840
Cequent Americas [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	446,670	437,280	400,400
Operating Profit (Loss)	31,090	8,850	27,420
Capital Expenditures	4,530	5,610	9,670
Depreciation and Amortization	11,410	13,680	12,780
Corporate [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(37,500)	(37,840)	(36,020)
Capital Expenditures	470	970	180
Depreciation and Amortization	$ 440	$ 260	$ 160

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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The net result for the period of deducting operating expenses from operating revenues.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 230

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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