EARNINGS PER SHARE - Computations for Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ (200,086)	$ (15,262)
Cumulative undeclared convertible preferred stock dividend	5,195	3,716
Net loss attributable to common shareholders	$ (205,281)	$ (18,978)
Basic weighted-average shares (in shares)	83,897	83,510
Loss per common share - basic (in dollars per share)	$ (2.45)	$ (0.23)
Net loss	$ (200,086)	$ (15,262)
Cumulative undeclared convertible preferred stock dividends	5,195	3,716
Net loss attributable to common shareholders	$ (205,281)	$ (18,978)
Diluted weighted-average shares (in shares)	83,897	83,510
Loss per common share - diluted (in dollars per share)	$ (2.45)	$ (0.23)