Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lessee Lease Description [Line Items]
Sublease, description of option to extend	lease amendment that provided for additional office space in Davis, CA, and extended the term through April 2025, with one option to renew for an additional five-year term. The Company initially expected to exercise its options to renew, and in accordance with ASC 842, Leases, accounted for the amendment and expected renewal as a lease modification and remeasured the operating lease liability.
Operating Lease, Liability	$ 3,294	$ 6,106
Right of use assets	$ 3,081	$ 5,826
Lease option to extend, description	Some leases (the Davis office, warehouse, greenhouses and a copy machine) include one or more options to renew, with renewal terms that can extend the lease term from one to six years.
Minimum [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term	1 year
Operating leases, term of contract	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term	6 years
Operating leases, term of contract	5 years
ASU 2016-02
Lessee Lease Description [Line Items]
Operating Lease, Liability	$ 2,800
Right of use assets	$ 2,600
Office Space [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term	5 years	5 years
Office Space [Member] | Chesterfield, MO And Chatsworth, CA [Member]
Lessee Lease Description [Line Items]
Operating leases, term of contract	35 months
Existence of option to extend	true