Going Concern - Chapter 11 (Details) - Subsequent Event - Restructuring Support Agreement	Nov. 06, 2018 USD ($)
10% Senior Secured Notes due 2021
Restructuring Cost and Reserve [Line Items]
Debt instrument, ownership percentage	81.83%
Stated interest rate	10.00%
10% Senior Secured PIK Notes due 2021
Restructuring Cost and Reserve [Line Items]
Debt instrument, ownership percentage	84.76%
Stated interest rate	10.00%
First Lien Claims | Multidraw Term Loan Agreement
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	$ 50,000,000
Second Lien Notes Claims | 10% Senior Secured Notes due 2021
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	9,427,000
Second Lien Notes Claims | 10% Secured PIK Notes due 2023
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	80,000,000
Second Lien PIK Notes Claims
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	9,427,000
Second Lien PIK Notes Claims | 10% Secured PIK Notes due 2023
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	80,000,000
Second Lien PIK Notes Claims | 10% Senior Secured PIK Notes due 2021
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	275,045,768
Holders Of General Unsecured Claims
Restructuring Cost and Reserve [Line Items]
Plan of reorganization, amount to be settled in cash	$ 400,000