Related-Party Agreements - Summary of Outstanding Balances of Related-Party Agreements (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Due from related parties	$ 2,137	$ 2,019
Related Party
Related Party Transaction [Line Items]
Due from related parties	2,137	2,019
Accounts payable	1,096	1,136
Related Party | NantBio
Related Party Transaction [Line Items]
Due from related parties	1,294	1,294
Accounts payable	943	943
Related Party | NantWorks
Related Party Transaction [Line Items]
Due from related parties	698	541
Accounts payable	0	0
Related Party | Brink Biologics, Inc.
Related Party Transaction [Line Items]
Due from related parties	77	62
Related Party | Various
Related Party Transaction [Line Items]
Due from related parties	68	122
Related Party | Duley Road, LLC
Related Party Transaction [Line Items]
Accounts payable	113	136
Related Party | Immuno-Oncology Clinic, Inc.
Related Party Transaction [Line Items]
Accounts payable	$ 40	$ 57