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Note 18 - Income Taxes (Details Textual) - USD ($)
 12 Months Ended
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