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

Geographic and Customer Information - Additional Information (Detail)

v3.21.1
Geographic and Customer Information - Additional Information (Detail)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Number of customers three one two
Customer One [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 51.00% 64.00% 18.00%
Customer Two [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 22.00%   82.00%
Customer Three [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 10.00%