Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for the three months ended March 31, 2017 are summarized as follows (dollars in thousands):



	Packaging		Aerospace		Energy		Engineered Components		Total
Balance, December 31, 2016	$	162,090	$	146,430	$	—	$	6,560	$	315,080
Foreign currency translation and other	1,030		—		—		—		1,030
Balance, March 31, 2017	$	163,120	$	146,430	$	—	$	6,560	$	316,110

Schedule of Intangible Assets (excluding Goodwill) by Major Class

The Company amortizes its other intangible assets over periods ranging from one to 30 years. The gross carrying amounts and accumulated amortization of the Company's other intangibles as of March 31, 2017 and December 31, 2016 are summarized below (dollars in thousands):



	As of March 31, 2017					As of December 31, 2016
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Customer relationships, 5 – 12 years	$	73,820	$	(35,200	)	$	73,570	$	(33,200	)
Customer relationships, 15 – 25 years	132,230		(46,690		)	132,230		(44,970		)
Total customer relationships	206,050		(81,890		)	205,800		(78,170		)
Technology and other, 1 – 15 years	57,490		(26,880		)	57,470		(26,040		)
Technology and other, 17 – 30 years	43,300		(31,900		)	43,300		(31,370		)
Total technology and other	100,790		(58,780		)	100,770		(57,410		)
Indefinite-lived intangible assets:
Trademark/Trade names	42,930		—			42,930		—
Total other intangible assets	$	349,770	$	(140,670	)	$	349,500	$	(135,580	)

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 (dollars in thousands):



	Three months ended March 31,
	2017		2016
Technology and other, included in cost of sales	$	1,350	$	1,380
Customer relationships, included in selling, general and administrative expenses	3,640		3,720
Total amortization expense	$	4,990	$	5,100