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COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 USD ($) ft²
Commitments And Contingencies [Line Items] |
Operating lease costs | $ | $ 2.6
Variable lease expense | $ | 0.5
Cash paid for operating lease liabilities included net cash used in operating activities | $ | $ 1.6
Operating lease, weighted-average remaining lease term | 8 years 7 months 6 days
Operating lease, weighted-average discount rate | 6.20%
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
Office and Laboratory | Brisbane, California |
Commitments And Contingencies [Line Items] |
Area of space leased (in sqft) | ft² | 87,700
Operating Lease One | Office and Laboratory | Richmond, California |
Commitments And Contingencies [Line Items] |
Area of space leased (in sqft) | ft² | 45,600
Operating Lease One | Research and Office Space | Valbonne, France |
Commitments And Contingencies [Line Items] |
Area of space leased (in sqft) | ft² | 20,800

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