Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net sales	$ 172,344	$ 136,718
Cost of sales	118,680	102,594
Gross profit	53,664	34,124
Research and development costs	5,223	5,009
Selling, general and administrative expenses	25,296	21,026
Restructuring charges	3,507	0
Income from operations	19,638	8,089
Interest expense	(983)	(688)
Other income (expense), net	81	(773)
Earnings before provision for income taxes	18,736	6,628
Provision for income taxes	4,164	1,564
Net earnings available to common stockholders	14,572	5,064
Common Class A [Member]
Net earnings available to common stockholders	$ 2,331	$ 821
Net earnings per common share:
Class A common share - basic and diluted (in dollars per share)	$ 1.09	$ 0.38
Weighted-average number of shares outstanding:
Class A common share - basic and diluted (in shares)	2,142	2,145
Common Class B [Member]
Net earnings available to common stockholders	$ 12,241	$ 4,243
Net earnings per common share:
Class A common share - basic and diluted (in dollars per share)	$ 1.15	$ 0.41
Weighted-average number of shares outstanding:
Class A common share - basic and diluted (in shares)	10,639	10,374