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Note 13 - Related Party Transactions (Details Textual) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Legal Fees |  | $ 0 | $ 88,000
Due to Related Parties, Noncurrent, Total |  | 1,100,000 | 1,600,000
Interest Expense, Related Party |  | 61,000 | 93,000
Due from Related Parties, Current, Total |  | 1,387,131 |
Conversion of Related Party Debt to Equity [Member] |  |  |
Debt Conversion, Original Debt, Amount | $ 600,000 |  |
Schwan Incorporated [Member] |  |  |
Related Party Transaction, Amounts of Transaction |  | 16,000 | 41,000
CTI Europe [Member] |  |  |
Long-term Debt, Gross |  | 14,000 | $ 28,000
Board of Directors Chairman [Member] |  |  |
Due from Related Parties, Current, Total |  | $ 1.30 |

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- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 + Details
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