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

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the six months ended June 30, 2020 are summarized as follows (dollars in thousands):

	Packaging			Aerospace		Specialty Products			Total
Balance, December 31, 2019	$	181,650		$	133,690	$	19,300		$	334,640
Goodwill from acquisitions	—			43,260		—			43,260
Goodwill reassigned in segment realignment	—			12,740		(12,740		)	—
Foreign currency translation and other	(1,580		)	—		—			(1,580		)
Balance, June 30, 2020	$	180,070		$	189,690	$	6,560		$	376,320

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 June 30, 2020					As of December 31, 2019
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Customer relationships, 5 – 12 years	$	100,160	$	(54,200	)	$	73,860	$	(49,910	)
Customer relationships, 15 – 25 years	122,280		(59,230		)	122,280		(56,010		)
Total customer relationships	222,440		(113,430		)	196,140		(105,920		)
Technology and other, 1 – 15 years	54,100		(31,240		)	52,430		(29,790		)
Technology and other, 17 – 30 years	43,300		(38,620		)	43,300		(37,620		)
Total technology and other	97,400		(69,860		)	95,730		(67,410		)
Indefinite-lived intangible assets:
Trademark/Trade names	51,620		—			42,850		—
Total other intangible assets	$	371,460	$	(183,290	)	$	334,720	$	(173,330	)

Schedule of Finite-Lived Intangible Assets, Amortization Expense

Amortization expense related to intangible assets as included in the accompanying consolidated statement of operations is summarized as follows (dollars in thousands):

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Technology and other, included in cost of sales	$	1,260	$	1,200	$	2,470	$	2,400
Customer relationships, included in selling, general and administrative expenses	4,040		3,550		7,680		6,980
Total amortization expense	$	5,300	$	4,750	$	10,150	$	9,380