XML 41 R30.htm IDEA: XBRL DOCUMENT v3.21.2
MARKETABLE EQUITY SECURITIES (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Marketable Securities      
Fair value changes in equity securities $ 0.2 $ 2.5  
Investment value $ 3.3   $ 3.1
TriStar      
Marketable Securities      
Common stock that can be purchased by warrants (in shares) 19,640,000