FRESH START ACCOUNTING - Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 28, 2017	Mar. 31, 2018
Reorganizations [Abstract]
Enterprise value	$ 419,720
Plus: Cash and other assets	371,278
Less: Fair value of debt	(236,261)
Less: Fair value of warrants	(15,648)
Fair value of Successor common stock	$ 539,089
Shares issued upon emergence (in shares)	20,000,000	682
Per share value (in usd per share)	$ 26.95445