Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net sales	$ 457,665	$ 333,313	$ 285,907
Cost of sales	371,810	289,059	235,388
Gross profit	85,855	44,254	50,519
Selling, general, and administrative expense	41,034	28,222	24,954
Operating income	44,821	16,032	25,565
Other income	97	328	1,002
Interest expense	(3,568)	(1,202)	(933)
Income before income taxes	41,350	15,158	25,634
Income tax expense	10,201	3,635	6,584
Net income	$ 31,149	$ 11,523	$ 19,050
us-gaap_EarningsPerShareAbstract
Basic (in dollars per share)	$ 3.14	$ 1.17	$ 1.95
Diluted (in dollars per share)	$ 3.11	$ 1.16	$ 1.93
Shares used in per share calculations:
Basic (in shares)	9,914	9,854	9,788
Diluted (in shares)	10,012	9,928	9,873