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EARNINGS PER COMMON SHARE (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Basic:    
Net income (loss) $ (336,559) $ (2,598)
Weighted average basic number of common shares outstanding 158,549 153,884
Basic net income (loss) per share of common share (in dollars per share) $ (2.12) $ (0.02)
Diluted:    
Net income (loss) $ (336,559) $ (2,598)
Weighted average basic number of common shares outstanding 158,549 153,884
Weighted average diluted number of common shares outstanding 158,549 153,884
Diluted net income (loss) per share of common stock (in dollars per share) $ (2.12) $ (0.02)
Common stock equivalents excluded from computation of diluted earnings per share of common stock because of anti-dilutive effect 14,900 13,200