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NET INCOME PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2022
Earnings Per Share [Abstract]  
Reconciliation of the weighted average number of shares outstanding used in calculating diluted net income per share
A reconciliation of the weighted-average number of shares outstanding used in calculating diluted net income per share is as follows (in thousands):
 Three Months Ended
September 30,		Nine Months Ended
September 30,
 2022202120222021
Weighted-average number of basic common shares outstanding39,564 41,068 40,326 41,032 
Weighted-average dilutive stock options, restricted stock units and performance share units
107 178 149 202 
Assumed conversion of convertible senior notes— 96 29 125 
Weighted-average number of diluted common and common equivalent shares outstanding
39,671 41,342 40,504 41,359