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Condensed Consolidated Statements of Income (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Revenues    
Total revenues $ 162,143 $ 117,279
Operating expenses    
Cost of sales 35,170 15,922
Amortization of intangibles 17,835 0
Research and development 17,979 11,853
Selling, general and administrative 37,357 13,834
Total operating expenses 108,341 41,609
Operating income 53,802 75,670
Other income (expense)    
Investment and other income, net 2,979 498
Interest expense (4,543) (1,759)
Net income before income taxes 52,238 74,409
Income tax expense 12,623 14,301
Net income $ 39,615 $ 60,108
Earnings per share    
Basic (USD per share) $ 0.29 $ 0.44
Diluted (USD per share) $ 0.29 $ 0.43
Weighted average common shares outstanding    
Basic (shares) 135,027 137,658
Diluted (shares) 137,900 141,277
Royalties    
Revenues    
Total revenues $ 99,640 $ 69,605
Product sales, net    
Revenues    
Total revenues 60,794 22,140
Revenues under collaborative agreements    
Revenues    
Total revenues $ 1,709 $ 25,534