Leases - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020 USD ($) Lease	Apr. 30, 2020 Lease	Dec. 31, 2019 USD ($)
Lessee Lease Description [Line Items]
Sublease, description of option to extend		lease amendments, including one that provides for additional office space in Davis, CA, and extends the term through April 2025, with one option to renew for an additional five-year term. The Company expects to exercise its options to renew, and in accordance with ASC 842, accounted for the amendment and expected renewal as a lease modification and remeasured the operating lease liability
Number of lease amendments | Lease		4	2
Operating Lease, Liability		$ 6,106		$ 2,108
Right of use assets		$ 5,826		$ 1,963
Existence of option to extend		true
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		$ 3,800
Right of use assets		$ 3,800
Molokai, HI, [Member]
Lessee Lease Description [Line Items]
Sublease, description of option to extend		lease amendment for additional parcels of land in Molokai, HI, modified the Molokai office space lease to extend the term by 12 months, and entered into new lease agreements for office equipment, collectively resulting in an additional $0.1 million of operating lease liabilities and right of use assets.
Operating Lease, Liability		$ 100
Right of use assets		$ 100
Woodland, CA, [Member]
Lessee Lease Description [Line Items]
Sublease, description of option to extend		lease amendment for the land and greenhouses in Woodland, CA, extending the term by four years collectively, and resulting in an additional $0.3 million of operating lease liabilities and right of use assets.
Operating Lease, Liability		$ 300
Right of use assets		$ 300
Oregon [Member]
Lessee Lease Description [Line Items]
Sublease, description of option to extend		In connection with the ISI Acquisition, the Company entered into a new lease for the premises and equipment in Oregon with a three-year term, resulting in an additional $0.2 million of operating lease liabilities and right of use assets.
Operating Lease, Liability		$ 200
Right of use assets		$ 200
Oregon [Member] | Premises And Equipment [Member]
Lessee Lease Description [Line Items]
Operating leases, term of contract		3 years
Office Space [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term		5 years
Office Space [Member] | Molokai, HI, [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term		12 months
Office Space [Member] | Woodland, CA, [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term		4 years
Office Space [Member] | Chesterfield, MO [Member] | Scenario Forecast [Member]
Lessee Lease Description [Line Items]
Operating leases, term of contract	38 months
Existence of option to extend	false