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Concentrations - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Accounts Receivable | Customer Concentration Risk | One Customer            
Concentration Risk [Line Items]            
Percentage of Total Revenue   78.00%        
Accounts Receivable | Customer Concentration Risk | Four Customers            
Concentration Risk [Line Items]            
Percentage of Total Revenue 84.00%          
Revenue | Customer Concentration Risk | Two Customers            
Concentration Risk [Line Items]            
Percentage of Total Revenue       91.00%    
Revenue | Customer Concentration Risk | Three Customers            
Concentration Risk [Line Items]            
Percentage of Total Revenue         66.00%  
Revenue | Customer Concentration Risk | Four Customers            
Concentration Risk [Line Items]            
Percentage of Total Revenue     75.00%     80.00%
Accounts Payables | Supplier Concentration Risk | One Vendor            
Concentration Risk [Line Items]            
Percentage of Total Revenue 21.00% 42.00%        
Cost of Goods Sold | Supplier Concentration Risk | Two Supplier            
Concentration Risk [Line Items]            
Percentage of Total Revenue     53.00%   51.00% 57.00%
Cost of Goods Sold | Supplier Concentration Risk | Three Suppliers            
Concentration Risk [Line Items]            
Percentage of Total Revenue       50.00%