Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Balance, beginning	$ 303,970	$ 334,640
Goodwill, Acquired During Period	17,770	92,390
Goodwill, Impairment Loss		(126,840)
Goodwill reassigned between segments		0
Foreign currency translation	(6,250)	3,780
Balance, ending	315,490	303,970
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	234,560	181,650
Goodwill, Acquired During Period	10,550	49,130
Goodwill, Impairment Loss		0
Goodwill reassigned between segments		0
Foreign currency translation	(6,370)	3,780
Balance, ending	238,740	234,560
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning	62,850	133,690
Goodwill, Acquired During Period	7,220	43,260
Goodwill, Impairment Loss		(126,840)
Goodwill reassigned between segments		12,740
Foreign currency translation	120	0
Balance, ending	70,190	62,850
Specialty Products [Member]
Goodwill [Roll Forward]
Balance, beginning	6,560	19,300
Goodwill, Acquired During Period	0	0
Goodwill, Impairment Loss		0
Goodwill reassigned between segments		(12,740)
Foreign currency translation	0	0
Balance, ending	$ 6,560	$ 6,560