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NET INCOME PER SHARE - Schedule of Computation of EPS (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Numerator:        
Net income—basic $ 25,763 $ 19,876 $ 6,227 $ 26,704
Adjusted net income—diluted $ 26,792 $ 20,915 $ 6,227 $ 28,782
Denominator:        
Weighted average common shares outstanding - basic (in shares) 46,088 45,501 46,019 45,185
Computation of diluted securities:        
Weighted average number of shares outstanding - diluted (in shares) 52,054 52,478 46,285 52,262
Net income per share:        
Basic net income per common share (in USD per share) $ 0.56 $ 0.44 $ 0.14 $ 0.59
Diluted net income per common share (in USD per share) $ 0.51 $ 0.40 $ 0.13 $ 0.55
Employee Stock Option        
Computation of diluted securities:        
Dilutive effect of share based compensation arrangements (in shares) 108 1,016 92 1,106
Restricted Stock Units (RSUs)        
Computation of diluted securities:        
Dilutive effect of share based compensation arrangements (in shares) 244 347 170 360
Weighted average ESPP purchase options        
Computation of diluted securities:        
Dilutive effect of share based compensation arrangements (in shares) 7 7 4 4
Accounting Standards Update 2020-06        
Numerator:        
ASU 2020-06 convertible notes if-converted method adjustment $ 1,029 $ 1,039 $ 0 $ 2,078
Computation of diluted securities:        
ASU 2020-06 convertible notes if-converted method adjustment (in shares) 5,607 5,607 0 5,607