Annual report pursuant to Section 13 and 15(d)

Note 7 - Investments - Investments (Details)

v3.21.1
Note 7 - Investments - Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Investment, Cost $ 5,000 $ 17,740
Investment, Unrealized gain/(loss) 18
Investment, Market value 5,000 17,758
US Treasury Securities [Member]    
Investment, Cost 5,000  
Investment, Unrealized gain/(loss)  
Investment, Market value $ 5,000  
Investments [Member]    
Investment, Cost   12,008
Investment, Unrealized gain/(loss)   18
Investment, Market value   12,026
Corporate Debt Securities [Member]    
Investment, Cost   3,736
Investment, Unrealized gain/(loss)  
Investment, Market value   3,736
Canadian Provincial Promissory Notes [Member]    
Investment, Cost   1,996
Investment, Unrealized gain/(loss)  
Investment, Market value   $ 1,996