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SHARE-BASED COMPENSATION
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
SHARE-BASED COMPENSATION
11. SHARE-BASED COMPENSATION
 
Restricted Stock Units
 
The table below presents the activity of restricted stock units for the six months ended June 30, 2021:
SharesWeighted Average Grant Date Fair Value
Non-vested restricted stock units, beginning of period532,374 $22.49 
Changes during the period:  
Granted210,566 21.67 
Vested(121,922)25.40 
Forfeited(9,443)17.03 
Non-vested restricted stock units, end of period611,575 21.71