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

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the nine months ended September 30, 2023 are summarized as follows (dollars in thousands):

	Packaging		Aerospace		Specialty Products		Total
Balance, December 31, 2022	$	263,550	$	69,700	$	6,560	$	339,810
Goodwill from acquisitions	20,420		—		—		20,420
Foreign currency translation and other	(1,440)		(10)		—		(1,450)
Balance, September 30, 2023	$	282,530	$	69,690	$	6,560	$	358,780

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, 2023				As of December 31, 2022
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Customer relationships, 5 – 12 years	$	139,730	$	(86,540)	$	131,660	$	(80,000)
Customer relationships, 15 – 25 years	129,640		(79,030)		129,650		(74,380)
Total customer relationships	269,370		(165,570)		261,310		(154,380)
Technology and other, 1 – 15 years	56,830		(41,090)		56,860		(38,990)
Technology and other, 17 – 30 years	43,300		(40,630)		43,300		(40,330)
Total technology and other	100,130		(81,720)		100,160		(79,320)
Indefinite-lived intangible assets:
Trademark/Trade names	62,300		—		60,340		—
Total other intangible assets	$	431,800	$	(247,290)	$	421,810	$	(233,700)

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,
	2023		2022		2023		2022
Technology and other, included in cost of sales	$	800	$	800	$	2,410	$	2,510
Customer relationships, included in selling, general and administrative expenses	3,810		3,760		11,400		12,090
Total amortization expense	$	4,610	$	4,560	$	13,810	$	14,600