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Note 14 - Related Party Transactions
 12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Related Party Transactions Disclosure [Text Block]
NOTE 
14.
  Related Party Transactions
 
In
April 2020,
the Company recorded a net amount of
$652,000
related to the disgorgement of stockholder short-swing profits under Section
16
(b) of the Securities Exchange Act of
1934,
as amended. The Company recognized these related party proceeds as an increase to contributed capital on the consolidated balance sheet.