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SUBSEQUENT EVENTS: (Details) - $ / shares
12 Months Ended
Mar. 01, 2023
Jan. 26, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
SUBSEQUENT EVENTS          
Dividends paid as cash dividend (in dollars per share)     $ 3.50 $ 3.20 $ 1.50
Subsequent Events          
SUBSEQUENT EVENTS          
Dividends paid as cash dividend (in dollars per share) $ 1.0        
Quarterly dividend authorized (in dollars per share)   $ 1.0