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Concentration Risk (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Customer A [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage | 22.60% | 31.40% |
Customer B [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage | 19.20% | 15.90% |
Customer C [Member] | Accounts Receivable [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage |  | 11.70% |
Revenue [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage | 10.00% |  |
Revenue [Member] | Supplier A [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage |  |  | 44.70%
Revenue [Member] | Supplier A [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage |  | 18.70% |
Revenue [Member] | Supplier B [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage |  |  | 14.70%
Revenue [Member] | Customer A [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage | 26.90% | 25.50% | 37.70%
Revenue [Member] | Customer B [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage | 19.70% | 15.10% | 10.90%
Revenue [Member] | Customer C [Member] |  |  |
Concentration Risk (Details) [Line Items] |  |  |
Concentration risk, percentage |  | 14.10% |

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