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EARNINGS (LOSS) PER SHARE (Tables)
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Schedule of calculations of shares used to compute basic and diluted earnings (loss) per share
The calculations of shares used to compute basic and diluted loss per share are as follows (in thousands):
 
Year ended December 31,
 
2018
 
2017
 
2016
Weighted average shares outstanding—basic
103,916

 
58,822

 
49,385

Potential dilutive common shares

 

 

Weighted average shares outstanding—diluted
103,916

 
58,822

 
49,385