Agreements - Summary of total purchase price allocated (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Asset Acquisition [Line Items]
Investment in Santhera	$ 13,465	[1]
Total purchase consideration	94,978
Vamorolone [Member]
Asset Acquisition [Line Items]
License and acquired intangibles for vamorolone (IPR&D)	81,513
Investment in Santhera	13,465
Total purchase consideration	$ 94,978

[1] The fair value of the investment in Santhera was determined based on the closing market price (CHF 8.25) of Santhera shares and the exchange rate (1.1537) of CHF to USD on the date the shares were transferred, July 19, 2023.