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Note 18 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Deferred Tax Assets, Foreign Deferred Revenue and Other Provision | $ 2,548,000 | $ 3,604,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Unrecognized Tax Benefits, Ending Balance | $ 200,000 | 200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total | 0 | 0
State and Local Jurisdiction [Member] |  |
Income Taxes Paid | 6,000 | 13,000
Proceeds from Income Tax Refunds | 0 | 5,000
Operating Loss Carryforwards, Total | 109,358,000 |
Operating Loss Carryforwards, Subject to Expiration | 103,386,000 |
Operating Loss Carryforwards, Not Subject to Expiration | 5,972,000 |
State and Local Jurisdiction [Member] | FL [Member] |  |
Operating Loss Carryforwards, Total | 61,197,000 |
State and Local Jurisdiction [Member] | Kentucky 1 [Member] |  |
Operating Loss Carryforwards, Total | 48,161,000 |
Foreign Tax Authority [Member] |  |
Income Taxes Paid | 211,000 | 206,000
Proceeds from Income Tax Refunds | $ 0 | 0
Foreign Tax Authority [Member] | MEXICO |  |
Income Tax Examination, Year under Examination | 2016 |
Domestic Tax Authority [Member] |  |
Income Taxes Paid | $ 0 | 0
Proceeds from Income Tax Refunds | 0 | 92,000
Operating Loss Carryforwards, Total | 146,619,000 |
Operating Loss Carryforwards, Subject to Expiration | 135,646,000 |
Operating Loss Carryforwards, Not Subject to Expiration | $ 10,973,000 |
Mexican Subsidiaries [Member] |  |
Deferred Tax Assets, Foreign Deferred Revenue and Other Provision |  | $ 3,717,000

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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