Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 97,725	$ 98,735	$ 197,232	$ 189,326
Cost of sales	77,163	85,690	158,927	161,774
Gross margin	20,562	13,045	38,305	27,552
Selling, general and administrative expense	10,492	8,660	20,161	17,155
Operating income	10,070	4,385	18,144	10,397
Other income and expense
Interest expense, net	293	459	649	1,000
Net periodic post-retirement benefit	(52)	(31)	(105)	(62)
Total other expense	241	428	544	938
Income before taxes	9,829	3,957	17,600	9,459
Income tax expense	1,893	1,769	3,812	3,407
Net income	$ 7,936	$ 2,188	$ 13,788	$ 6,052
Net income per common share:
Basic (in USD per share)	$ 0.93	$ 0.26	$ 1.62	$ 0.71
Diluted (in USD per share)	$ 0.91	$ 0.26	$ 1.59	$ 0.71