DEBT - Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 01, 2017	Feb. 28, 2017	Dec. 31, 2016	Oct. 20, 2016	Nov. 20, 2015
Debt Instrument [Line Items]
Total debt	$ 235,927
Less: current portion of long-term debt	(425)
Long-term debt	235,502
Second Lien Notes | Senior Notes
Debt Instrument [Line Items]
Total debt	$ 225,000
Interest rate	7.50%	7.50%
Notes Due Two Thousand Seventeen | Convertible Debt
Debt Instrument [Line Items]
Interest rate			1.75%
Notes Due Two Thousand Twenty Two | Senior Notes
Debt Instrument [Line Items]
Interest rate			7.50%		7.50%
Building Loan | Secured Debt
Debt Instrument [Line Items]
Total debt	$ 10,927
Interest rate	4.20%
Predecessor
Debt Instrument [Line Items]
Total debt				$ 1,427,784
Less: current portion of long-term debt				(408)
Less: liabilities subject to compromise				(1,075,000)
Long-term debt				352,376
Predecessor | Notes Due Two Thousand Seventeen | Convertible Debt
Debt Instrument [Line Items]
Total debt				$ 300,000
Interest rate				1.75%	1.75%
Predecessor | Notes Due Two Thousand Twenty Two | Senior Notes
Debt Instrument [Line Items]
Total debt				$ 775,000
Interest rate				7.50%
Predecessor | Bank Debt | Line of Credit | Predecessor revolving credit facility
Debt Instrument [Line Items]
Total debt				$ 341,500
Predecessor | Building Loan
Debt Instrument [Line Items]
Interest rate						4.20%
Predecessor | Building Loan | Secured Debt
Debt Instrument [Line Items]
Total debt				$ 11,284
Interest rate				4.20%