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Note 5 - Accounts Receivable and Customer Concentrations (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Revenue |  |  | Accounts Receivable |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Customer A |  |  | 67% |  |  |  | 75% |  |  |  | 57% |  |  |  | 76% |
Customer B |  |  | * |  |  |  | * |  |  |  | 12% |  |  |  | * |

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