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Concentration of Risks (Tables) | 12 Months Ended
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Dec. 31, 2020
Risks and Uncertainties [Abstract] |
Schedule of Customers Representing Greater than 10% of Total Revenues and/or Outstanding Receivables | The following table presents customers representing greater than 10% of total revenues and/or outstanding receivable as of and for the years ended December 31, 2020 and 2019 (in thousands):
Consolidated | Revenue |  | % |  | Accounts Receivable |  | %
2020: |  |  |  |  |  |  |
Customer 1 | $ | 4,915 |  |  | 12 | % |  | $ | 1,423 |  |  | 25 | %
Customer 2 | 3,535 |  |  | 9 |  |  | 1,192 |  |  | 21 |
| $ | 8,450 |  |  | 21 | % |  | $ | 2,615 |  |  | 46 | %
2019: |  |  |  |  |  |  |
Customer 1 | $ | 9,270 |  |  | 20 | % |  | $ | 1,172 |  |  | 19 | %
| $ | 9,270 |  |  | 20 | % |  | $ | 1,172 |  |  | 19 | %
LNG Segment | Revenue |  | % |  | Accounts Receivable |  | %
2020: |  |  |  |  |  |  |
Customer 1 | $ | 4,915 |  |  | 12 | % |  | $ | 1,423 |  |  | 28 | %
Customer 2 | 3,535 |  |  | 9 |  |  | 1,192 |  |  | 24 |
| $ | 8,450 |  |  | 21 | % |  | $ | 2,615 |  |  | 52 | %
2019: |  |  |  |  |  |  |
Customer 1 | $ | 9,270 |  |  | 21 | % |  | $ | 1,172 |  |  | 23 | %
Customer 2 | 4,206 |  |  | 10 |  |  | — |  |  | — |
| $ | 13,476 |  |  | 31 | % |  | $ | 1,172 |  |  | 23 | %
Power Delivery Segment | Revenue |  | % |  | Accounts Receivable |  | %
2020: |  |  |  |  |  |  |
Customer 1 | $ | 527 |  |  | 10 | % |  | $ | 1 |  |  | 1 | %
Customer 2 | 96 |  |  | 2 |  |  | 112 |  |  | 18 |
Customer 3 | 131 |  |  | 3 |  |  | 89 |  |  | 14 |
| $ | 754 |  |  | 15 | % |  | $ | 202 |  |  | 33 | %
2019: |  |  |  |  |  |  |
Customer 1 | $ | 472 |  |  | 14 | % |  | $ | 51 |  |  | 6 | %
Customer 2 | 407 |  |  | 12 |  |  | 103 |  |  | 11 |
| $ | 879 |  |  | 26 | % |  | $ | 154 |  |  | 17 | %

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