STOCKHOLDERS' EQUITY (DEFICIT) - Computation of Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
NUMERATOR:                      
Net income (loss) attributable to the Company – common shares                 $ (644,348) $ 135,070 $ (83,344)
DENOMINATOR:                      
Weighted average common shares outstanding - basic (in shares)                 361,141 360,294 359,508
Stock options and restricted stock (in shares)                 0 1,318
Weighted average common shares outstanding - diluted (in shares)                 361,141 361,612 359,508
Net income (loss) attributable to the Company per common share:                      
Basic (in dollars per share) $ (1.50) $ (0.18) $ (0.02) $ (0.09) $ 0.27 $ (0.09) $ (0.20) $ 0.39 $ (1.78) $ 0.37 $ (0.23)
Diluted (in dollars per share) $ (1.50) $ (0.18) $ (0.02) $ (0.09) $ 0.27 $ (0.09) $ (0.20) $ 0.39 $ (1.78) $ 0.37 $ (0.23)
Stock options and restricted shares not included in computation of diluted earnings per share                 8,000 5,600 8,100