FRESH START ACCOUNTING - Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Mar. 01, 2017	Feb. 28, 2017	Dec. 31, 2017
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)	$ (15,600)
Fair value of Successor common stock		$ 539,089
Shares issued (in shares)	20,000	20,000
Per share value (in usd per share)		$ 26.95