Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Significant Accounting Policies - Summary of Estimated Useful Lives of Related Assets (Detail)

v3.21.1
Significant Accounting Policies - Summary of Estimated Useful Lives of Related Assets (Detail)
 12 Months Ended
Dec. 31, 2020
Computers and software [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment depreciation rate 33.00%
Office furniture and equipment [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment depreciation rate 15.00%
Office furniture and equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment depreciation rate 15.00%
Office furniture and equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment depreciation rate 7.00%
Electronic equipment [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment depreciation rate 15.00%
Leasehold improvements [Member]  
Property, Plant and Equipment [Line Items]  
Property plant and equipment description of depreciation rate Over the shorter of the related lease period or the useful life of the assets