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Note 7 - Other (Income) Expense (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
    2020   2019
         
Gain on disposal of business   $
-
    $
(6,082
)
Other (income) expense    
(361
)    
67
 
    $
(361
)   $
(6,015
)