Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for the years ended December 31, 2021 and 2020 are as follows (dollars in thousands):


					Specialty
	Packaging		Aerospace		Products		Total
Balance, December 31, 2019	$	181,650	$	133,690	$	19,300	$	334,640
Goodwill from acquisitions	49,130		43,260		—		92,390
Goodwill reassigned in segment realignment	—		12,740		(12,740)		—
Impairment charge	—		(126,840)		—		(126,840)
Foreign currency translation and other	3,780		—		—		3,780
Balance, December 31, 2020	$	234,560	$	62,850	$	6,560	$	303,970
Goodwill from acquisitions	10,550		7,220		—		17,770


Foreign currency translation and other	(6,370)		120		—		(6,250)
Balance, December 31, 2021	$	238,740	$	70,190	$	6,560	$	315,490

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, 2021 and 2020 are summarized below (dollars in thousands):


	As of December 31, 2021				As of December 31, 2020
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Customer relationships, 5 - 12 years	$	124,310	$	(71,150)	$	122,970	$	(59,470)
Customer relationships, 15 - 25 years	130,190		(68,190)		122,280		(62,450)
Total customer relationships	254,500		(139,340)		245,250		(121,920)
Technology and other, 1 - 15 years	57,060		(36,140)		57,180		(32,800)
Technology and other, 17 - 30 years	43,300		(39,920)		43,300		(39,450)
Total technology and other	100,360		(76,060)		100,480		(72,250)
Indefinite-lived intangible assets:
Trademark/Trade names	57,270		—		54,640		—
Total other intangible assets	$	412,130	$	(215,400)	$	400,370	$	(194,170)

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):


	Year ended December 31,
	2021		2020		2019
Technology and other, included in cost of sales	$	3,820	$	4,930	$	4,780
Customer relationships, included in selling, general and administrative expenses	17,740		15,820		13,850
Total amortization expense	$	21,560	$	20,750	$	18,630

Schedule of Expected Amortization Expense [Table Text Block]

Estimated amortization expense for the next five fiscal years beginning after December 31, 2021 is as follows (dollars in thousands):


Year ended December 31,	Estimated Amortization Expense
2022		$	19,100
2023		$	17,200
2024		$	15,700
2025		$	15,350
2026		$	13,630