Annual report pursuant to Section 13 and 15(d)

Note 8 - Income Taxes (Details Textual)

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Note 8 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
May 07, 2020
Apr. 15, 2020
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Net Operating Loss Carryforwards Limitation on Use       $ 1,800  
Remaining Preownership Net Operating Loss Carryforwards     $ 4,500 4,500  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount     (11,200)    
Unrecognized Tax Benefits, Ending Balance     0 0 $ 0
Paycheck Protection Program CARES Act [Member]          
Proceeds from Issuance of Long-term Debt, Total   $ 4,100      
Repayments of Long-term Debt, Total $ 4,100        
Other Liabilities [Member]          
Accrued Payroll Taxes     700 700  
State and Local Jurisdiction [Member]          
Operating Loss Carryforwards, Total     1,200 1,200 1,400
Operating Loss Carryforwards with a Definite Life     100 $ 100  
State and Local Jurisdiction [Member] | Minimum [Member]          
Operating Loss Carryforwards Expiration Periods (Year)       5 years  
State and Local Jurisdiction [Member] | Maximum [Member]          
Operating Loss Carryforwards Expiration Periods (Year)       20 years  
Domestic Tax Authority [Member]          
Operating Loss Carryforwards, Total     34,900 $ 34,900  
Deferred Tax Assets, Operating Loss Carryforwards, Total     7,337 7,337 $ 7,991
Operating Loss Carryforwards with a Definite Life     31,500 31,500  
Operating Loss Carryforwards with Indefinite Life     $ 3,400 $ 3,400  
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]          
Open Tax Year       2017 2018 2019 2020  
Income Tax Examination, Year under Examination       2018  
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]          
Open Tax Year       2016 2017 2018 2019 2020