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Segment Reporting and Concentrations - Additional information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) client | Sep. 30, 2019 client | Sep. 30, 2020 USD ($) segment client | Sep. 30, 2019 client | Dec. 31, 2019 USD ($) client
Segment Reporting Information [Line Items] |  |  |  |  |
Number of Reportable Segments | segment |  |  | 3 |  |
Right-of-use-asset | $ | $ 6,923 |  | $ 6,923 |  | $ 7,005
Sales Revenue, Net [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration Risk, Percentage |  |  |  | 10.00% |
Foreign Customer [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration Risk, Percentage | 55.00% | 57.00% | 54.00% | 54.00% |
Foreign Customer [Member] | Accounts receivable |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration Risk, Percentage |  |  | 57.00% |  | 60.00%
One Client [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  | 1 | 1 |
Concentration Risk, Percentage |  |  | 14.00% | 16.00% |
Two clients [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients | 2 | 2 |  |  |
Concentration Risk, Percentage | 23.00% | 25.00% |  |  |
Two clients [Member] | Accounts receivable |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  | 2 |  |
Concentration Risk, Percentage |  |  | 24.00% |  |
Three Clients [Member] | Accounts receivable |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients |  |  |  |  | 3
Concentration Risk, Percentage |  |  |  |  | 44.00%
Client [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Number of clients | 0 | 0 | 0 | 0 |
Concentration Risk, Percentage | 10.00% | 10.00% | 10.00% | 10.00% |

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