EARNINGS (LOSS) PER SHARE (Tables)

12 Months Ended

Dec. 31, 2017

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,
	2017	2016	2015
Weighted average shares outstanding—basic	58,822	49,385	49,560
Potential dilutive common shares	—	—	—
Weighted average shares outstanding—diluted	58,822	49,385	49,560