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Concentrations - Additional Information (Detail) |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Accounts Receivable | Customer Concentration Risk | One Customer |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue | 98.00% |  |  |  |  |
Accounts Receivable | Customer Concentration Risk | Two Customers |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue |  | 81.00% |  |  |  |
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 |  |  |  | 62.00% |  | 60.00%
Revenue | Customer Concentration Risk | Four Customers |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue |  |  |  |  | 80.00% |
Accounts Payables | Supplier Concentration Risk | One Vendor |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue |  | 26.00% |  |  |  |
Accounts Payables | Supplier Concentration Risk | Two Vendors |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue | 29.00% |  |  |  |  |
Cost of Goods Sold | Supplier Concentration Risk | Two Supplier |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue |  |  |  | 53.00% | 57.00% | 64.00%
Cost of Goods Sold | Supplier Concentration Risk | Three Suppliers |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Percentage of Total Revenue |  |  | 50.00% |  |  |

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