Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 are as follows:

							Aerospace &		Engineered		Cequent		Cequent
	Packaging			Energy			Defense		Components		Asia Pacific		Americas			Total
	(dollars in thousands)
Balance, December 31, 2010	$	113,320		$	48,260		$	41,130	$	3,180	$	—	$	—		$	205,890
Goodwill from acquisitions	9,810			720			—		—		—		—			10,530
Foreign currency translation and other	(800		)	(260		)	—		—		—		—			(1,060		)
Balance, December 31, 2011	$	122,330		$	48,720		$	41,130	$	3,180	$	—	$	—		$	215,360
Goodwill from acquisitions	35,420			15,500			—		—		—		3,470			54,390
Foreign currency translation and other	1,230			(10		)	—		—		—		(30		)	1,190
Balance, December 31, 2012	$	158,980		$	64,210		$	41,130	$	3,180	$	—	$	3,440		$	270,940

Schedule of Intangible Assets (excluding Goodwill) by Major Class

The gross carrying amounts and accumulated amortization of the Company's other intangibles as of December 31, 2012 and 2011 are summarized below. The Company amortizes these assets over periods ranging from one to 30 years.

	As of December 31, 2012					As of December 31, 2011
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(dollars in thousands)
Finite-lived intangible assets:
Customer relationships, 5 - 12 years	$	85,740	$	(30,080	)	$	37,400	$	(23,410	)
Customer relationships, 15 - 25 years	154,610		(85,960		)	154,610		(77,730		)
Total customer relationships	240,350		(116,040		)	192,010		(101,140		)
Technology and other, 1 - 15 years	37,130		(26,320		)	29,360		(23,710		)
Technology and other, 17 - 30 years	43,800		(23,070		)	43,640		(20,860		)
Total technology and other	80,930		(49,390		)	73,000		(44,570		)
Indefinite-lived intangible assets:
Trademark/Trade names	50,310		—			36,370		—
Total other intangible assets	$	371,590	$	(165,430	)	$	301,380	$	(145,710	)

Schedule of Finite-Lived Intangible Assets, Amortization Expense

Amortization expense related to intangible assets as included in the accompanying consolidated statement of income is summarized as follows:

	Year ended December 31,
	2012		2011		2010
	(dollars in thousands)
Technology and other, included in cost of sales	$	4,940	$	3,490	$	3,580
Customer relationships, included in selling, general and administrative expenses	14,880		11,020		10,510
Total amortization expense	$	19,820	$	14,510	$	14,090

Schedule of Expected Amortization Expense [Table Text Block]

Estimated amortization expense for the next five fiscal years beginning after December 31, 2012 is as follows:

Year ended December 31,	Estimated Amortization Expense
	(dollars in thousands)
2013	$	19,850
2014	$	19,700
2015	$	18,940
2016	$	18,540
2017	$	18,260