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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Consolidated Statements of Operations      
Net sales $ 646,137 $ 583,277 $ 454,163
Cost of sales 382,989 341,003 259,863
Gross profit 263,148 242,274 194,300
Operating expenses, net:      
Research and development 103,565 88,680 78,994
Selling, general, and administrative 88,952 84,536 76,251
Amortization of intangible assets 10,018 12,280 15,333
Restructuring     1,097
Asset impairment     281
Other operating expense (income), net 317 68 (221)
Total operating expenses, net 202,852 185,564 171,735
Operating income 60,296 56,710 22,565
Interest income 2,199 2,340 1,551
Interest expense (11,510) (28,360) (24,739)
Other income (expense), net   (5,010) (7,841)
Income before income taxes 50,985 25,680 (8,464)
Income tax expense (benefit) (115,957) (358) (73)
Net income $ 166,942 $ 26,038 $ (8,391)
Income per common share:      
Basic (in dollars per share) $ 3.35 $ 0.53 $ (0.17)
Diluted (in dollars per share) $ 2.71 $ 0.49 $ (0.17)
Weighted average number of shares:      
Basic (in shares) 49,906 49,073 48,362
Diluted (in shares) 65,607 53,643 48,362