UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Net product revenues	$ 134,216	$ 107,028	$ 253,342	$ 192,341
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of product sold	$ 25,008	$ 18,921	$ 45,788	$ 33,637
Cost, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit	$ 109,208	$ 88,107	$ 207,554	$ 158,704
Operating expenses:
Research and development	14,969	12,668	28,258	20,246
Sales and marketing	24,528	20,160	47,100	37,743
General and administrative	22,809	22,163	44,871	40,043
Total operating expenses	62,306	54,991	120,229	98,032
Operating income	46,902	33,116	87,325	60,672
Other (expense) income, net	(31)	42	(29)	40
Interest expense, net	(2,776)	(3,927)	(5,421)	(8,096)
Income before income taxes	44,095	29,231	81,875	52,616
Income tax expense	(9,795)	(5,700)	(18,090)	(7,600)
Net income	34,300	23,531	63,785	45,016
Unrealized loss on investments	(491)	(29)	(371)	(29)
Comprehensive income	$ 33,809	$ 23,502	$ 63,414	$ 44,987
EARNINGS PER SHARE:
Basic	$ 0.57	$ 0.40	$ 1.07	$ 0.76
Diluted	$ 0.56	$ 0.39	$ 1.05	$ 0.74
Weighted average number of shares of common stock - basic	59,974,123	59,063,358	59,853,808	58,986,370
Weighted average number of shares of common stock - diluted	60,743,953	60,922,672	60,997,410	60,759,026