UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Net product revenue	$ 154,615	$ 119,126
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember
Cost of product sold	$ 27,484	$ 20,780
Cost, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit	$ 127,131	$ 98,346
Operating expenses:
Research and development	22,189	13,289
Sales and marketing	27,233	22,572
General and administrative	25,676	22,062
Total operating expenses	75,098	57,923
Operating income	52,033	40,423
Other (expense) income, net	(141)	2
Interest expense	(4,535)	(5,731)
Interest income	4,428	3,086
Income before income taxes	51,785	37,780
Income tax expense	(13,451)	(8,295)
Net income	38,334	29,485
Unrealized (loss) income on investments	(173)	120
Comprehensive income	$ 38,161	$ 29,605
EARNINGS PER SHARE:
Basic	$ 0.68	$ 0.49
Diluted	$ 0.67	$ 0.48
Weighted average number of shares of common stock - basic	56,771,251	59,732,157
Weighted average number of shares of common stock - diluted	57,597,627	61,221,511