Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.20.2
Leases - Additional Information (Detail)
 6 Months Ended 9 Months Ended
Jan. 02, 2019
USD ($)
Jun. 30, 2020
USD ($)
Lease
Sep. 30, 2020
USD ($)
ft²
Jul. 31, 2020
USD ($)
Jul. 01, 2020
ft²
Dec. 31, 2019
USD ($)
Jan. 01, 2019
USD ($)
Lessee Lease Description [Line Items]              
Operating lease, options to renew term     1 year        
Lessee, Operating Lease, Existence of Option to Extend [true false]     true        
Operating lease, right-of-use asset     $ 2,061,000     $ 276,000  
Operating lease, liability     $ 2,073,000        
Lessee, operating lease incremental borrowing rate     12.25%       12.78%
Operating lease, lease not yet commenced, description     The Foothill Ranch lease is a 11,936 square foot lease and will be used as the Company’s headquarters upon commencement on July 1, 2020.        
Corona Lease [Member]              
Lessee Lease Description [Line Items]              
Operating lease, right-of-use asset   $ 600,000          
Operating lease, liability   $ 600,000          
Lease facility area | ft²     11,032        
Foothill Ranch [Member]              
Lessee Lease Description [Line Items]              
Operating lease, right-of-use asset       $ 1,300,000      
Operating lease, liability       $ 1,300,000      
Number of new real property leases | Lease   2          
Lease facility area | ft²         11,936    
ASU 2016-02              
Lessee Lease Description [Line Items]              
Operating lease, right-of-use asset             $ 800,000
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List             us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Adjustment for deferred rent             $ 200,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]             us-gaap:AccruedLiabilitiesCurrent
Operating lease, liability             $ 1,000,000
Cumulative-effect adjustment to retained earnings $ 0            
Minimum [Member]              
Lessee Lease Description [Line Items]              
Lease term     1 year        
Maximum              
Lessee Lease Description [Line Items]              
Lease term     5 years        
Lease initial term of contract     1 year