Inventories - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Inventory [Line Items]
Inventories, net	$ 169,559	$ 225,730
Inventory, raw materials	44,230	43,366
Inventory, work in Process, gross	25,232	101,719
Inventory, finished goods, gross	100,097	80,645
Viela Bio [Member]
Inventory [Line Items]
Inventories, net		151,600
Inventory, raw materials		10,100
Inventory, work in Process, gross		120,900
Inventory, finished goods, gross		20,600
UPLIZNA [Member]
Inventory [Line Items]
Inventory set-up expense	$ 91,700	$ 27,600