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EARNINGS (LOSS) PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Potentially Dilutive Securities
The following potentially dilutive securities outstanding as of December 31, 2021, 2020 and 2019 have been excluded from the denominator of the diluted loss per share of common stock outstanding calculation (in thousands):
December 31,
 202120202019
Warrants199 2,247 22,895 
Stock options15,703 10,147 6,236 
Total 15,902 12,394 29,131