CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Product revenue, net	$ 482,375	$ 401,858	$ 365,978
Operating expenses:
Cost of sales	6,481	5,385	5,281
Research and development	184,353	130,991	113,864
Selling, general and administrative	184,259	152,848	122,356
Settlement expense related to Melucci litigation	0	14,000	0
Insurance recovery related to Melucci litigation	0	(14,000)	0
Total operating expenses	375,093	289,224	241,501
Income from operations	107,282	112,634	124,477
Interest and other income	17,275	3,557	529
Income before income taxes	124,557	116,191	125,006
Income tax expense	(18,417)	(14,773)	(12,494)
Net income	106,140	101,418	112,512
Net income attributable to common stockholders, basic	105,496	101,288	112,512
Net income attributable to common stockholders, diluted	$ 105,496	$ 101,288	$ 112,512
Basic net income per share (in dollars per share)	$ 1.02	$ 0.95	$ 0.97
Diluted net income per share (in dollars per share)	$ 0.94	$ 0.87	$ 0.89
Weighted-average shares outstanding used in computing net income per common share
Basic (in shares)	103,560	106,787	115,653
Diluted (in shares)	111,742	115,966	125,963