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SHARE-BASED COMPENSATION - Restricted Stock Activity (Details) - Restricted Stock - $ / shares
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Shares    
Outstanding at beginning of period (in shares) 43 50
Granted (in shares) 29 17
Vested (in shares) (18) (14)
Outstanding at end of period (in shares) 54 53
Weighted-Average Grant Date Fair Value    
Outstanding at beginning of period (in dollars per share) $ 183.51 $ 116.06
Granted (in dollars per share) 175.66 253.03
Vested (in dollars per share) 149.95 109.14
Outstanding at end of period (in dollars per share) $ 190.20 $ 157.80