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

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for the nine months ended September 30, 2019 are summarized as follows (dollars in thousands):



	Packaging			Aerospace			Specialty Products		Total
Balance, December 31, 2018	$	163,660		$	146,430		$	6,560	$	316,650
Goodwill from acquisitions	18,400			—			—		18,400
Goodwill reassigned in segment realignment	—			(12,740		)	12,740		—
Foreign currency translation and other	(2,380		)	—			—		(2,380		)
Balance, September 30, 2019	$	179,680		$	133,690		$	19,300	$	332,670

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 are summarized below (dollars in thousands):



	As of September 30, 2019					As of December 31, 2018
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Customer relationships, 5 – 12 years	$	80,780	$	(54,490	)	$	73,450	$	(48,410	)
Customer relationships, 15 – 25 years	132,230		(63,970		)	132,230		(58,790		)
Total customer relationships	213,010		(118,460		)	205,680		(107,200		)
Technology and other, 1 – 15 years	57,020		(33,700		)	57,020		(31,600		)
Technology and other, 17 – 30 years	43,300		(37,110		)	43,300		(35,600		)
Total technology and other	100,320		(70,810		)	100,320		(67,200		)
Indefinite-lived intangible assets:
Trademark/Trade names	47,320		—			42,930		—
Total other intangible assets	$	360,650	$	(189,270	)	$	348,930	$	(174,400	)

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 September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Technology and other, included in cost of sales	$	1,200	$	1,230	$	3,610	$	3,680
Customer relationships, included in selling, general and administrative expenses	3,750		3,630		11,310		10,920
Total amortization expense	$	4,950	$	4,860	$	14,920	$	14,600