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SHARE-BASED COMPENSATION
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
SHARE-BASED COMPENSATION SHARE-BASED COMPENSATION
Equity Incentive Awards
Generally, we grant the following types of awards: (i) restricted stock units with either time- or performance-based criteria; and (ii) time-based options. We estimate forfeiture amounts based on historical patterns.
A summary of award activity is as follows (in thousands):
Stock Options Restricted Stock Units
Outstanding, December 31, 20226,793 2,709 
Granted103 1,537 
Exercised options or vested shares(2,037)(1,720)
Canceled or forfeited(28)(54)
Outstanding, September 30, 20234,831 2,472 
There were approximately 2.1 million awards of our common stock available for future equity grants under our existing equity incentive plan as of September 30, 2023