CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue:
Revenue	$ 182,660	$ 206,400
Costs and operating expenses:
Cost of product revenue	81,845	82,356
Research and development	12,154	12,155
Selling, general and administrative	56,170	54,300
Contingent consideration	1,235	(2,411)
Total costs and operating expenses	151,404	146,400
Income from operations	31,256	60,000
Other income (expenses):
Investment income	5,486	77
Interest expense	(270)	(292)
Amortization of debt issuance costs	(457)	(452)
Other income (expenses)	77	(402)
Other income (expenses), net	4,836	(1,069)
Income before income taxes	36,092	58,931
Income tax provision	7,263	11,967
Net income	$ 28,829	$ 46,964
Earnings per share:
Basic	$ 0.52	$ 0.85
Diluted (Note 10)	$ 0.51	$ 0.81
Weighted average common shares outstanding:
Basic	55,590	55,353
Diluted (Note 10)	57,049	58,816
Net income	$ 28,829	$ 46,964
Other comprehensive income (loss):
Foreign currency translation adjustment	3,273	(4,688)
Comprehensive income	32,102	42,276
Products
Revenue:
Revenue	182,621	206,363
Royalty and other revenue
Revenue:
Revenue	$ 39	$ 37