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Note 8 - Note Receivable (Tables) | 3 Months Ended
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Mar. 31, 2022
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2022 |  |  | 2021 |
Accounts receivable |  | $ | 2,817,116 |  |  | $ | 1,234,411 |
Loss on foreign currency |  |  | (50,000 | ) |  |  | (50,000 | )
Allowance for doubtful accounts |  |  | (213,785 | ) |  |  | (213,785 | )
Accounts receivable, net of allowances for doubtful accounts |  | $ | 2,553,331 |  |  | $ | 970,626 |
Notes Receivable [Member] |
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2022 |  |  | 2021 |
Note receivable |  | $ | 295,000 |  |  | $ | 295,000 |
Repayment of note |  |  | (3,000 | ) |  |  | - |
Allowance for doubtful account |  |  | (100,000 | ) |  |  | (100,000 | )
Note receivable, net of allowance |  |  | 192,000 |  |  |  | 195,000 |
Current portion, net of allowance |  | $ | 82,000 |  |  | $ | 82,000 |
Noncurrent portion, net of allowance |  | $ | 110,000 |  |  | $ | 113,000 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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