Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 312,383	$ 301,629
Cost of sales	207,190	194,696
Selling and administrative expenses	74,080	74,553
Total operating costs and expenses	281,270	269,249
Operating income	31,113	32,380
Interest expense	3,567	3,942
Other expense (income), net	1,630	1,463
Income before income taxes	25,916	26,975
Income taxes	5,432	7,593
Net income	$ 20,484	$ 19,382
Per common share:
Basic (in dollars per share)	$ 0.40	$ 0.38
Diluted (in dollars per share)	$ 0.40	$ 0.38
Weighted average common shares outstanding:
Basic (in shares)	51,022,417	50,933,666
Diluted (in shares)	51,168,622	51,087,688