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

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 310 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126942793&loc=d3e3073-115593 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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