Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Activity of Restricted Stock Units (Details)

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SHARE-BASED COMPENSATION - Activity of Restricted Stock Units (Details) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Time-based Restricted Share Units    
Restricted Share Units    
Unvested, beginning balance (in shares) 45,566 16,762
Granted (in shares) 45,251 66,819
Vested (in shares) (18,164) (9,235)
Canceled/forfeited (in shares) (8,949) (28,780)
Unvested, ending balance (in shares) 63,704 45,566
Weighted-Average Grant Date Fair Value    
Unvested, beginning price (in dollars per share) $ 105.05 $ 327.90
Granted (in dollars per share) 7.49 75.90
Vested (in dollars per share) 89.84 275.70
Canceled/forfeited (in dollars per share) 44.55 112.50
Unvested, ending price (in dollars per share) $ 48.59 $ 105.05
Market-based Restricted Share Units    
Restricted Share Units    
Unvested, beginning balance (in shares) 17,632 35,789
Granted (in shares) 0 0
Vested (in shares) (1,372) (3,350)
Canceled/forfeited (in shares) (5,990) (14,807)
Unvested, ending balance (in shares) 10,270 17,632
Weighted-Average Grant Date Fair Value    
Unvested, beginning price (in dollars per share) $ 384.03 $ 388.20
Granted (in dollars per share) 0 0
Vested (in dollars per share) 415.92 417.37
Canceled/forfeited (in dollars per share) 387.85 387.00
Unvested, ending price (in dollars per share) $ 379.78 $ 384.03