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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Balance, beginning	$ 363,770	$ 339,810
Goodwill, Acquired During Period		20,420
Foreign currency translation	(7,410)	3,540
Balance, ending	356,360	363,770
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	287,350	263,550
Goodwill, Acquired During Period		20,420
Foreign currency translation	(6,850)	3,380
Balance, ending	280,500	287,350
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning	69,860	69,700
Goodwill, Acquired During Period		0
Foreign currency translation	(560)	160
Balance, ending	69,300	69,860
Specialty Products [Member]
Goodwill [Roll Forward]
Balance, beginning	6,560	6,560
Goodwill, Acquired During Period		0
Foreign currency translation	0	0
Balance, ending	$ 6,560	$ 6,560

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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