v3.22.4
STOCK PLANS - RSU Activity (Details) - RSUs - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number of Restricted Stock Units        
Unvested balance at the beginning of the period (in shares) 955,277 957,453 631,141  
Granted (in shares) 621,149 446,450 665,476  
Vested (in shares) (331,196) (309,779) (239,085)  
Forfeited (in shares) (95,768) (138,847) (100,079)  
Unvested balance at the end of the period (in shares) 1,149,462 955,277 957,453  
Weighted Average Grant Date Fair Value (Per Share)        
Unvested balance at the beginning of the period (in dollars per shares) $ 52.85 $ 46.34 $ 41.87  
Granted (in dollars per share) 60.11 60.81 48.70  
Vested (in dollars per share) 50.25 45.16 41.91  
Forfeited (in dollars per share) 56.00 50.67 44.43  
Unvested balance at the end of the period (in dollars per shares) $ 57.26 $ 52.85 $ 46.34  
Aggregate Intrinsic Value (in Thousands)        
Unvested balance at the end of the period $ 44,381 $ 57,479 $ 57,294 $ 28,591