Product Revenues, Net, Accounts Receivable, Net, and Reserves for Product Revenues - Summary of Product Revenues (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Product Information [Line Items]
Products, net	$ 328,689	$ 513,123	$ 659,204	$ 1,124,646
PMO Products [Member]
Product Information [Line Items]
Products, net	230,564	231,272	459,114	467,810
PMO Products [Member] \| United States [Member]
Product Information [Line Items]
Products, net	198,605	202,922	387,394	388,750
PMO Products [Member] \| Rest Of World [Member]
Product Information [Line Items]
Products, net	31,959	28,350	71,720	79,060
ELEVIDYS [Member]
Product Information [Line Items]
Products, net	98,125	281,851	200,090	656,836
ELEVIDYS [Member] \| United States [Member]
Product Information [Line Items]
Products, net	$ 98,125	$ 281,851	$ 200,090	$ 656,836

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details