Bankruptcy Related Disclosures - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands		1 Months Ended		2 Months Ended		3 Months Ended	8 Months Ended	9 Months Ended
	Aug. 31, 2017	Sep. 30, 2017		Aug. 31, 2017	Aug. 31, 2017	Sep. 30, 2018	Aug. 31, 2017	Sep. 30, 2018
Schedule of Reorganization Items, Net [Line Items]
Proceeds from issuance of debt		$ 8,677,000						$ 45,454,000
Reorganization shares issued to debt holders (in shares)	2,000
Par value of reorganization shares (in dollars per share)	$ 0.01
Put option fee	$ 2,000,000
Reorganization items		128,000	[1]			$ 0		$ 0
Professional fees		$ 128,000
Common Stock
Schedule of Reorganization Items, Net [Line Items]
Reorganization shares issued to debt holders (in shares)	400
11.0% Senior Secured Term Loan Credit Facilities due September 14, 2018
Schedule of Reorganization Items, Net [Line Items]
Stated interest rate (as a percent)	11.00%			11.00%	11.00%		11.00%
12.75% Senior Secured Notes due December 15, 2018
Schedule of Reorganization Items, Net [Line Items]
Stated interest rate (as a percent)	12.75%			12.75%	12.75%		12.75%
5.25% Convertible Notes due December 30, 2019
Schedule of Reorganization Items, Net [Line Items]
Stated interest rate (as a percent)	5.25%			5.25%	5.25%		5.25%
Cash received from initial draw on New ABL Facility | Line of Credit
Schedule of Reorganization Items, Net [Line Items]
Line of credit capacity	$ 125,000,000			$ 125,000,000	$ 125,000,000		$ 125,000,000
Proceeds from line of credit	78,797,000
New Money Notes | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Proceeds from issuance of debt	38,002,000
Aggregate principal amount	47,502,000			47,502,000	47,502,000		47,502,000
Second Lien Notes | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Aggregate principal amount	$ 162,502,000			$ 162,502,000	$ 162,502,000		$ 162,502,000
Second Lien Notes | Minimum | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Stated interest rate (as a percent)	5.00%			5.00%	5.00%		5.00%
Second Lien Notes | Maximum | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Stated interest rate (as a percent)	7.00%			7.00%	7.00%		7.00%
Prepetition Second Lien Secured Claims | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Aggregate principal amount	$ 111,875,000			$ 111,875,000	$ 111,875,000		$ 111,875,000
Repayments of debt	$ 6,646,000
Prepetition Second Lien Secured Claims | Secured Debt
Schedule of Reorganization Items, Net [Line Items]
Reorganization shares issued to debt holders (in shares)	1,300
Prepetition Third Lien Secured Claims | Senior Notes
Schedule of Reorganization Items, Net [Line Items]
Aggregate principal amount	$ 3,125,000			3,125,000	3,125,000		3,125,000
Prepetition Third Lien Secured Claims | Secured Debt
Schedule of Reorganization Items, Net [Line Items]
Reorganization shares issued to debt holders (in shares)	300
Predecessor
Schedule of Reorganization Items, Net [Line Items]
Debtor Reorganization Items, Legal and Advisory Professional Fees Cash Payment					8,571,000
Proceeds from issuance of debt							195,026,000
Reorganization items				(80,033,000)	(74,531,000)		$ (74,531,000)
Professional fees				$ 6,690,000	7,342,000
Write off of debt issuance costs					$ 3,673,000

[1] * Adjusted due to the adoption of ASU No. 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." See Note 3 - New Accounting Standards, for additional information.