v3.25.2
Segment Information - Significant Segment Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Segment Information [Abstract]    
Revenue $ 2,170 $ 7,990
Less:    
Cost of revenues 154 213
Research and development expenses 152,919 120,507
Share-based compensation 82,178 50,191
General and administrative expenses 134,019 99,892
Gain on sale of Telavant net assets 0 (110,387)
Change in fair value of investments 19,125 (15,226)
Change in fair value of liability instruments 2,329 1,150
Interest income (48,322) (72,127)
Other expense, net 11,208 3,608
Income tax expense 4,649 11,963
Income from discontinued operations, net of tax 0 (89,093)
Net (loss) income (273,911) 57,490
Research and Development Expense [Member]    
Less:    
Share-based compensation 11,099 10,532
Personnel Related Expenses [Member]    
Less:    
Research and development expenses 42,530 31,545
Other Research and Development Expenses [Member]    
Less:    
Research and development expenses 9,637 8,548
General and Administrative Expense [Member]    
Less:    
Share-based compensation 71,079 36,841
Personnel Related Expenses, General and Administrative [Member]    
Less:    
General and administrative expenses 30,110 29,697
Other General and Administrative Expenses [Member]    
Less:    
General and administrative expenses 32,830 33,354
Anti-FcRn Franchise-Neurological Diseases [Member]    
Less:    
Research and development expenses 20,937 18,479
Anti-FcRn Franchise-Endocrine Diseases [Member]    
Less:    
Research and development expenses 19,329 15,913
Anti-FcRn Franchise-Rheumatology Diseases [Member]    
Less:    
Research and development expenses 8,209 0
Anti-FcRn Franchise-Dermatology Diseases [Member]    
Less:    
Research and development expenses 5,145 0
Anti-FcRn Franchise-Other Clinical and Nonclinical [Member]    
Less:    
Research and development expenses 2,392 6,401
Brepocitinib [Member]    
Less:    
Research and development expenses 15,020 10,594
Mosliciguat [Member]    
Less:    
Research and development expenses 8,385 2,980
Other Development and Discovery Programs [Member]    
Less:    
Research and development expenses $ 10,236 $ 15,515