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Investments (Tables)
3 Months Ended
Mar. 31, 2022
Investments [Abstract]  
Schedule of net gains and losses
   March 31,
2022
   March 31,
2021
 
   (In thousands of
U.S. Dollars)
 
Net gains recognized during the period on equity securities  $       283   $    262 
Less: Net gains recognized during the period on equity securities sold during the period   2    54 
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date  $281   $208