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Concentrations (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Concentrations (Details) [Line Items] |  |  |
Number of major customers | 2 | 2 | 2
Number of major suppliers | 1 | 2 |
Customer One [Member] |  |  |
Concentrations (Details) [Line Items] |  |  |
Concentration risk, percentage | 84.00% | 21.00% | 16.00%
Customer Two [Member] |  |  |
Concentrations (Details) [Line Items] |  |  |
Concentration risk, percentage | 7.00% | 15.00% | 13.00%
Supplier One [Member] |  |  |
Concentrations (Details) [Line Items] |  |  |
Concentration risk, percentage | 100.00% | 31.00% |
Supplier Two [Member] |  |  |
Concentrations (Details) [Line Items] |  |  |
Concentration risk, percentage |  | 17.00% |

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