Condensed Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 236,693	$ 202,365	$ 465,560	$ 388,021
Cost of sales	164,817	142,918	322,178	269,847
Gross margin	71,876	59,447	143,382	118,174
Operating expenses:
Selling expenses	15,991	14,846	32,976	29,770
Research and development expenses	2,922	2,899	6,153	5,648
General and administrative expenses	13,043	11,109	25,997	21,588
Total operating expenses	31,956	28,854	65,126	57,006
Earnings from operations	39,920	30,593	78,256	61,168
Other expenses, net:
Interest expense, net	960	608	1,505	1,333
Other (income) expense, net	(298)	(34)	(137)	(167)
Total other expenses (income)	662	574	1,368	1,166
Earnings before income tax expense	39,258	30,019	76,888	60,002
Income tax expense	9,476	7,288	18,176	13,860
Net earnings	$ 29,782	$ 22,731	$ 58,712	$ 46,142
Net earnings per common share - basic (in dollars per share)	$ 0.93	$ 0.71	$ 1.83	$ 1.43
Net earnings per common share - diluted (in dollars per share)	$ 0.92	$ 0.70	$ 1.81	$ 1.41