Collaboration and License Agreements - Sarepta Therapeutics, Inc. (Details) $ in Thousands							1 Months Ended			3 Months Ended
	Nov. 20, 2025 USD ($)	Aug. 13, 2025 USD ($) shares	Feb. 24, 2025 USD ($)	Feb. 14, 2025 USD ($)	Feb. 07, 2025 USD ($)	Nov. 25, 2024 USD ($) obligation program	Nov. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Aug. 31, 2025 USD ($) shares	Dec. 31, 2025 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Treasury stock value								$ 53,193		$ 53,193	$ 53,193
Revenue										264,033		$ 2,500
Accounts receivable								6,824		218,871	6,824
Contract assets								0		9,827	0	$ 0
Sarepta
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Revenue										229,500
Accounts receivable										218,400
Contract assets										$ 9,800
Sarepta | Sarepta Collaboration Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Number of performance obligations | obligation						17
Upfront payment		$ 50,000	$ 500,000	$ 500,000					$ 50,000		50,000
Proceeds from sale of stock					$ 325,000
Equity premium					$ 83,600
Annual fees						$ 250,000
Annual installment						$ 50,000
Annual installments period						5 years
Total transaction price						$ 904,900
Fixed consideration						833,600
Variable consideration						$ 71,200
Development milestone payments	$ 200,000						$ 200,000	$ 100,000	100,000
Value of stock repurchased		$ 50,000							$ 50,000		$ 50,000
Number of collaboration programs | program						13
Collaboration agreement termination notice period prior to any regulatory approval of a licensed product						30 days
Common stock repurchased (in shares) | shares		2,660,989							2,660,989
Treasury stock value		$ 53,200							$ 53,200
Gain on settlement of treasury stock		$ 3,200							$ 3,200
Sarepta | Sarepta Collaboration Agreement | Maximum
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Number of new target programs | program						6
Regulatory milestone payments						$ 180,000
Sales-related milestone payments						700,000
Sarepta | Sarepta Collaboration Agreement | Minimum
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Regulatory milestone payments						110,000
Sales-related milestone payments						$ 500,000