Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.21.1
Commitments and Contingencies - Additional Information (Detail)
 3 Months Ended
Nov. 19, 2018
USD ($)
ft²
Dec. 11, 2017
ft²
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Mar. 01, 2018
USD ($)
Other Commitments [Line Items]          
Indemnification obligations     $ 0    
Expenses related to indemnification issues     0    
Seattle Lease Arrangement [Member]          
Other Commitments [Line Items]          
Consolidated lease rent and facilities expense     $ 42,000 $ 100,000  
Seattle Lease Arrangement [Member] | Pike [Member]          
Other Commitments [Line Items]          
Area of office space leased | ft²   3,187      
Lease agreement     On December 11, 2017, we entered into a lease, or the Seattle Lease, with 520 Pike Street, Inc., or Pike, pursuant to which we leased approximately 3,187 square feet located at Suite 2250 at 520 Pike Tower, Seattle, Washington, 98101, which commenced on March 1, 2018. The Seattle Lease expired on March 1, 2021 and was not renewed.    
Monthly base rent         $ 11,685
Monthly base rent, maximum annual increase         12,397
Lease, security deposit, annual payment         37,192
Lease, security deposit payment, annual decrease         12,397
Lease, security deposit payment, annual decrease after second anniversary         12,397
Lease, security deposit payment, annual decrease on termination of lease         $ 12,397
Vancouver Office Operating Lease [Member]          
Other Commitments [Line Items]          
Expiration of operating lease agreement     2019-01    
Consolidated lease rent and facilities expense     $ 42,000 $ 100,000  
Vancouver Office Operating Lease [Member] | Vancouver, British Columbia [Member]          
Other Commitments [Line Items]          
Lease agreement commencement date Feb. 01, 2019        
Area of office space leased | ft² 2,367        
Initial term of lease expiration date Jan. 31, 2023        
Operating lease, term of contract 4 years        
Operating lease, option to extend, description     The initial term of the Vancouver Lease will expire on January 31, 2023, with an option to extend the term for one further four-year period    
Lessee, Operating Lease, Existence of Option to Extend [true false]     true    
Operating lease, initial monthly base rent expenses $ 5,200        
Operating lease, revised monthly base rent expenses 5,400        
Construction allowance 14,200        
Security deposit $ 18,600