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Note 5 - Investments
3 Months Ended
Mar. 31, 2023
Notes to Financial Statements  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

5. INVESTMENTS

 

Major categories of net investment income during the three months ended March 31, 2023 and 2022 are summarized as follows:

 

  

March 31,
2023

  

March 31,
2022

 

Interest earned:

        

Short term investments and cash and cash equivalents

 $224  $31 

Net investment income

 $224  $31