Discontinued Operations - Additional Information (Detail) - ImmunityBio, Inc - Subsequent Event $ in Millions	Jan. 07, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Exchange for reimbursement of expenditures amount	$ 40.0
Transaction closed date	Feb. 14, 2022
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Exchange for reimbursement of expenditures amount	$ 40.0
Transaction closed date	Feb. 14, 2022