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Note 5 - Receivables - Accounts Receivable (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Accounts Receivable, after Allowance for Credit Loss, Total | $ 1,479,780 | $ 1,629,559 | $ 1,664,862 | $ 1,442,231
Billed Revenues [Member] | Government Sector [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Total | 1,456,519 | 1,573,407 | 1,594,473 |
Billed Revenues [Member] | Commercial and Industrial Sector [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Total | 22,000 | 56,152 | 0 |
Unbilled Revenues [Member] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Total | $ 1,261 | $ 0 | $ 70,389 |

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