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Note 4 - Valuation Accounts | 12 Months Ended
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Dec. 31, 2023
Notes to Financial Statements |
Allowance for Credit Losses [Text Block] | Note 4. Valuation Accounts Valuation and allowance accounts included the following at December 31:
|  |  |  |  |  | Net Charged |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Balance |  |  | to |  |  |  |  |  |  |  |  |  |  | Balance End |
|  | Beginning of |  |  | Costs and |  |  |  |  |  |  |  |  |  |  | of |
|  | Year |  |  | Expenses |  |  | Transfers |  |  | Net Write-Off |  |  | Year |
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for expected credit losses |  | $ | 319,000 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 319,000 |
Reserve for processing losses |  |  | 755,494 |  |  |  | 71,034 |  |  |  | — |  |  |  | — |  |  |  | 826,528 |
2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for expected credit losses |  | $ | 319,000 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 319,000 |
Reserve for processing losses |  |  | 623,494 |  |  |  | 132,000 |  |  |  | — |  |  |  | — |  |  |  | 755,494 |

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -Publisher FASB -URI https://asc.fasb.org//310/tableOfContent + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration