Goodwill and Other Intangible Assets Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Balance, beginning	$ 339,810
Goodwill, Acquired During Period	20,420
Translation and purchase accounting adjustments	(1,450)
Balance, ending	358,780
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	263,550
Goodwill, Acquired During Period	20,420
Translation and purchase accounting adjustments	(1,440)
Balance, ending	282,530
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning	69,700
Goodwill, Acquired During Period	0
Translation and purchase accounting adjustments	(10)
Balance, ending	69,690
Specialty Products [Member]
Goodwill [Roll Forward]
Balance, beginning	6,560
Goodwill, Acquired During Period	0
Translation and purchase accounting adjustments	0
Balance, ending	$ 6,560