Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 357,738	$ 377,376	$ 307,483
Total cost of sales	293,218	324,974	266,139
Gross margin	64,520	52,402	41,344
Selling, general and administrative expense	37,983	34,399	30,276
Operating income	26,537	18,003	11,068
Other income and expense
Loss from extinguishment of debt	0	1,582	0
Net periodic post-retirement benefit	(220)	(124)	(162)
Net interest expense	1,011	1,960	2,311
Total other income and expense	791	3,418	2,149
Income before income taxes	25,746	14,585	8,919
Income taxes:
Current	2,949	5,851	4,615
Deferred	2,473	(3,469)	(367)
Total income taxes	5,422	2,382	4,248
Net income	$ 20,324	$ 12,203	$ 4,671
Net income per common share:
Basic (in USD per share)	$ 2.37	$ 1.44	$ 0.55
Diluted (in USD per share)	$ 2.31	$ 1.44	$ 0.55