Segment Information Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022		Sep. 30, 2021	Sep. 30, 2022		Sep. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 218,530		$ 222,420	$ 680,520		$ 648,140
Operating profit (loss)	20,980		30,820	72,780		77,500
Segment Reporting Information, Additional Information [Abstract]
Gain (Loss) on Disposition of Assets				4,540		(130)
Aerospace [Member]
Segment Reporting Information, Additional Information [Abstract]
Gain (Loss) on Disposition of Assets	4,800			4,800
Operating Segments [Member] | Packaging [Member]
Segment Reporting Information [Line Items]
Net sales	129,700		138,010	416,540		409,730
Operating profit (loss)	17,590		27,340	66,720		76,490
Operating Segments [Member] | Aerospace [Member]
Segment Reporting Information [Line Items]
Net sales	45,420		46,510	137,330		135,680
Operating profit (loss)	4,710	[1]	3,980	9,300	[1]	10,600
Operating Segments [Member] | Specialty Products [Member]
Segment Reporting Information [Line Items]
Net sales	43,410		37,900	126,650		102,730
Operating profit (loss)	6,760		6,660	20,770		17,190
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (8,080)		$ (7,160)	$ (24,010)		$ (26,780)

[1] In the three and nine months ended September 30, 2022, the Company recognized a $4.8 million pre-tax gain on the sale of vacant land adjacent to the Company's Tolleson, Arizona manufacturing facility within the Aerospace segment.