Annual report pursuant to Section 13 and 15(d)

Leases - Schedule of Balance Sheets Classification of Leases (Detail)

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Leases - Schedule of Balance Sheets Classification of Leases (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Operating leases      
Operating lease right-of-use assets $ 11,104 $ 9,959 $ 4,180
Operating lease liabilities, current $ 2,210 1,683 976
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesCurrent    
Operating lease liabilities, non-current $ 12,213 11,682 $ 3,729
Total operating lease liabilities 14,423    
Finance leases      
Property and equipment, at cost 77    
Less, Accumulated depreciation 49    
Property and equipment, net $ 28    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:PropertyPlantAndEquipmentNet    
Finance Lease Liability, current portion $ 1 $ 18  
Finance Lease Liability Current Statement Of Financial Position Extensible List us-gaap:OtherLiabilitiesCurrent