CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - Royalty revenue - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortization of capitalized fees paid	$ 13,800	$ 13,800	$ 13,800
GSK
Amortization of capitalized fees paid	$ 13,823	$ 13,823	$ 13,823