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MARKETABLE EQUITY SECURITIES (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Marketable Securities      
Increase (decrease) in fair value of equity securities $ 0.6 $ 1.9  
Investment value $ 2.3   $ 1.7
TriStar      
Marketable Securities      
Stock that can be purchased by warrants (in shares) 19,640,000