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COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) ft²	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 31, 2021 ft²	Oct. 01, 2021 USD ($)	Feb. 01, 2021 USD ($)	Jan. 31, 2021 USD ($) ft²	Jan. 29, 2021 USD ($)	May 31, 2020 USD ($) ft²
Commitments And Contingencies [Line Items]
Lease agreement, extendable lease term				5 years
Operating lease, payments | $	$ 6.9
Operating lease, expense | $	$ 10.8	$ 10.4	$ 7.9
Operating lease, weighted average remaining lease term	8 years
Operating lease, weighted average discount rate, percent	5.60%
License obligations | $	$ 0.8
Minimum
Commitments And Contingencies [Line Items]
Lease agreement, extendable lease term	5 years
Maximum
Commitments And Contingencies [Line Items]
Lease agreement, extendable lease term	10 years
Richmond, California
Commitments And Contingencies [Line Items]
Lease not yet commenced, area of real estate							5,000		8,500
Lessee operating lease, lease not yet commenced amount | $					$ 9.1	$ 0.7	$ 0.9		$ 1.3
Reimbursement, tenant improvement allowance | $					$ 2.6
Richmond, California | November 1, 2021 through August 31, 2031
Commitments And Contingencies [Line Items]
Area of space leased (in sqft)				7,997
Valbonne, France
Commitments And Contingencies [Line Items]
Lease not yet commenced, area of real estate							5,800
Lessee, operating lease, amount | $							$ 0.8	$ 0.6
Office And Laboratory | Brisbane, California
Commitments And Contingencies [Line Items]
Area of space leased (in sqft)	87,700
Office And Laboratory | Richmond, California | Expires in August 2031
Commitments And Contingencies [Line Items]
Area of space leased (in sqft)	59,485
Office And Laboratory | Richmond, California | Expires in August 2026
Commitments And Contingencies [Line Items]
Area of space leased (in sqft)	7,700
Research and Office Space | Valbonne, France | Property Subject To Operating Lease One
Commitments And Contingencies [Line Items]
Area of space leased (in sqft)	25,600

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