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SUBSEQUENT EVENTS: (Details) - $ / shares
6 Months Ended
Jul. 21, 2022
Jun. 30, 2022
Jun. 30, 2021
SUBSEQUENT EVENTS      
Dividends declared and paid   $ 2.25 $ 1.30
Subsequent Events      
SUBSEQUENT EVENTS      
Quarterly dividend authorized (in dollars per share) $ 0.75