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SHARE-BASED COMPENSATION - Stock Units and Director Stock Grants (Details) - Stock and stock units
shares in Thousands
6 Months Ended
Jun. 30, 2022
$ / shares
shares
No. of Stock Units  
Stock and stock units, beginning of period (in shares) | shares 804
Changes during the period:  
Granted (in shares) | shares 525
Vested and settled (in shares) | shares (135)
Forfeited and cancelled (in shares) | shares (89)
Stock and stock units, end of period (in shares) | shares 1,105
Weighted Average Fair Value  
Stock and stock units, beginning of period (in dollars per share) | $ / shares $ 7.27
Changes during the period:  
Granted (in dollars per share) | $ / shares 1.30
Vested and settled (in dollars per share) | $ / shares 7.16
Forfeited and cancelled (in dollars per share) | $ / shares 7.13
Stock and stock units, end of period (in dollars per share) | $ / shares $ 4.46