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Note 16 - Financial Instruments - Recurring Fair Value Measurements (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Interest rate swap contracts, current | $ 0 | $ 1,142,682
Interest rate swap contracts, noncurrent | 0 | 2,669,244
Derivatives | 0 | 1,142,682
Derivatives | 168,138 | 0
Fair Value, Recurring [Member] |  |
Interest rate swap contracts, current | 56,042 | 1,142,682
Interest rate swap contracts, noncurrent | 168,138 |
Derivatives | 56,042 | 1,142,682
Derivatives |  | 2,669,244
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Interest rate swap contracts, current | 0 | 0
Interest rate swap contracts, noncurrent | 0 |
Derivatives | 0 | 0
Derivatives |  | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Interest rate swap contracts, current | 56,042 | 1,142,682
Interest rate swap contracts, noncurrent | 168,138 |
Derivatives | 56,042 | 1,142,682
Derivatives |  | 2,669,244
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Interest rate swap contracts, current | 0 | 0
Interest rate swap contracts, noncurrent | 0 |
Derivatives | $ 0 | 0
Derivatives |  | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 + Details
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