UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net product revenues	$ 117,206	$ 80,732	$ 309,547	$ 214,227
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties
Cost of product sold	$ 22,959	$ 14,604	$ 56,596	$ 37,701
Cost, Product and Service [Extensible Enumeration]	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties	Sales-based, Trademark and Tiered Royalties
Gross profit	$ 94,247	$ 66,128	$ 252,951	$ 176,526
Operating expenses:
Research and development	40,548	11,739	60,794	22,916
Sales and marketing	20,467	16,480	58,210	49,009
General and administrative	21,331	16,856	61,374	45,704
Total operating expenses	82,346	45,075	180,378	117,629
Operating income	11,901	21,053	72,573	58,897
Loss on debt extinguishment		(26,146)		(26,146)
Other expense (income), net	56		96	(15)
Interest expense, net	(3,990)	(5,429)	(12,086)	(19,783)
Income (loss) before income taxes	7,967	(10,522)	60,583	12,953
Income tax benefit (expense)	79,976	902	72,376	(1,070)
Net income	87,943	(9,620)	132,959	11,883
Unrealized loss on investments	(149)		(178)
Comprehensive income	$ 87,794	$ (9,620)	$ 132,781	$ 11,883
EARNINGS PER SHARE:
Basic	$ 1.48	$ (0.17)	$ 2.25	$ 0.21
Diluted	$ 1.44	$ (0.17)	$ 2.18	$ 0.20
Weighted average number of shares of common stock - basic	59,234,720	57,722,163	59,070,063	57,188,101
Weighted average number of shares of common stock - diluted	61,207,625	57,722,163	60,921,482	58,776,158