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Note 19 - Concentration of Risk (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Customer A |  |  | Customer B |  |  | Customer C |  |  | Customer D |  |  | Customer E |  |  | Customer F |
Six Months Ended June 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues, customer concentration risk |  |  | 11 | % |  |  | 14 | % |  |  | * |  |  |  | - |  |  |  | - |  |  |  | * |
Three Months Ended June 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues, customer concentration risk |  |  | 14 | % |  |  | 12 | % |  |  | * |  |  |  | - |  |  |  | - |  |  |  | * |
Six Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues, customer concentration risk |  |  | - |  |  |  | - |  |  |  | * |  |  |  | * |  |  |  | * |  |  |  | - |
Three Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues, customer concentration risk |  |  | - |  |  |  | - |  |  |  | * |  |  |  | * |  |  |  | * |  |  |  | - |
As of June 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, customer concentration risk |  |  | 62 | % |  |  | - |  |  |  | 17 | % |  |  | - |  |  |  | - |  |  |  | 10 | %
As of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, customer concentration risk |  |  | - |  |  |  | - |  |  |  | 28 | % |  |  | 27 | % |  |  | 21 | % |  |  | - |
|  | Supplier A |  |  | Supplier B |
Six Months Ended June 30, 2021 |  |  |  |  |  |  |  |
Cost of revenues, supplier concentration risk |  |  | 73 | % |  |  | 12 | %
Three Months Ended June 30, 2021 |  |  |  |  |  |  |  |
Cost of revenues, supplier concentration risk |  |  | 86 | % |  |  | * |
Six Months Ended June 30, 2020 |  |  |  |  |  |  |  |
Cost of revenues, supplier concentration risk |  |  | - |  |  |  | 78 | %
Three Months Ended June 30, 2020 |  |  |  |  |  |  |  |
Cost of revenues, supplier concentration risk |  |  | - |  |  |  | 81 | %

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