Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Consolidated Statements of Operations
Net sales	$ 177,366	$ 171,913	$ 492,511	$ 492,338
Cost of sales	100,489	101,962	286,107	292,109
Gross profit	76,877	69,951	206,404	200,229
Operating expenses, net:
Research and development	28,817	27,104	83,762	77,237
Selling, general, and administrative	22,814	22,144	69,263	67,987
Amortization of intangible assets	2,123	2,505	6,358	7,514
Other operating expense (income), net	860	634	1,264	587
Total operating expenses, net	54,614	52,387	160,647	153,325
Operating income	22,263	17,564	45,757	46,904
Interest income	3,024	571	7,518	873
Interest expense	(2,777)	(2,886)	(8,705)	(8,626)
Other income (expense), net			(97,091)
Income (loss) before income taxes	22,510	15,249	(52,521)	39,151
Income tax expense (benefit)	(2,064)	208	(516)	1,125
Net income (loss)	$ 24,574	$ 15,041	$ (52,005)	$ 38,026
Income (loss) per common share:
Basic (in dollars per share)	$ 0.44	$ 0.30	$ (0.98)	$ 0.76
Diluted (in dollars per share)	$ 0.42	$ 0.27	$ (0.98)	$ 0.70
Weighted average number of shares:
Basic (in shares)	55,352	49,887	52,978	49,831
Diluted (in shares)	59,636	65,151	52,978	65,090