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License Agreements - Additional Information (Details) $ / shares in Units, € in Millions	1 Months Ended	3 Months Ended		9 Months Ended			12 Months Ended
	Jan. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2026 USD ($) shares	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) Item shares	Sep. 30, 2026 EUR (€) Item	Sep. 30, 2025 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2012 Item	Dec. 31, 2025 USD ($) shares	Jan. 09, 2020 USD ($) $ / shares
Research And Development Arrangement Contract To Perform For Others [Line Items]
Revenue		$ 259,691,000	$ 170,992,000	$ 669,269,000		$ 442,497,000
Number of common shares \| shares		52,576,839		52,576,839					50,882,766
Value of common stock		$ 5,000		$ 5,000					$ 5,000
Research and development expense recognized		50,617,000	40,162,000	149,521,000		134,488,000
License Agreement \| Antecip
Research And Development Arrangement Contract To Perform For Others [Line Items]
Milestone payments or royalties		$ 6,200,000	$ 4,100,000	$ 16,100,000		$ 10,600,000
Number of exclusive license agreements \| Item				3	3			3
License agreement royalty as a percent of net sales		3.00%	3.00%	3.00%	3.00%	3.00%
License agreement royalty, maximum reduction percent as a result of required third party payments								50.00%
License agreement term, from first commercial sale								10 years
License Agreement \| Antecip \| AXS-05
Research And Development Arrangement Contract To Perform For Others [Line Items]
License agreement royalty as a percent of net sales								3.00%
License Agreement \| Antecip \| Other Two Products \| Minimum
Research And Development Arrangement Contract To Perform For Others [Line Items]
License agreement royalty as a percent of net sales								1.50%
License Agreement \| Antecip \| Other Two Products \| Maximum
Research And Development Arrangement Contract To Perform For Others [Line Items]
License agreement royalty as a percent of net sales								4.50%
Pfizer Inc \| License Agreement
Research And Development Arrangement Contract To Perform For Others [Line Items]
Number of common shares \| shares	82,019
Value of common stock	$ 8,000,000
Prior trading days	10 days
Share price \| $ / shares	$ 97.54
Upfront cash payment	$ 3,000,000
Fair value share price \| $ / shares										$ 87.24
Fair value of common stock										$ 7,200,000
Research and development expense recognized							$ 10,200,000
Future milestone payments		$ 323,000,000		$ 323,000,000
Milestone payments or royalties		0	$ 0	0		$ 0
Pharmanovia \| License Agreement
Research And Development Arrangement Contract To Perform For Others [Line Items]
Non-refundable upfront payment received				65,700,000	€ 62.0
Eligible to receive sales-based and other milestones \| €					€ 94.5
Royalty revenue		1,200,000	1,200,000	4,000,000		3,400,000
Other development and sales based milestones recognized		0	$ 0	$ 0		$ 0
Pharmanovia \| License Agreement \| Milestone Revenue
Research And Development Arrangement Contract To Perform For Others [Line Items]
Revenue		$ 8,500,000