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NET INCOME (LOSS) PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Reconciliation of the weighted average number of shares outstanding used in calculating diluted net income (loss) per share
A reconciliation of the weighted-average number of shares outstanding used in calculating diluted net income (loss) per share is as follows (in thousands):
 Three Months Ended
June 30,		Six Months Ended
June 30,
 2022202120222021
Weighted-average number of basic common shares outstanding40,512 41,054 40,715 41,014 
Weighted-average dilutive stock options, restricted stock units and performance share units
111 — 168 — 
Assumed conversion of convertible senior notes42 — 44 — 
Weighted-average number of diluted common and common equivalent shares outstanding
40,665 41,054 40,927 41,014