Basis of Presentation and Nature of Operations (Details)			3 Months Ended
	Oct. 25, 2016 USD ($)	Oct. 23, 2016	Dec. 31, 2016 USD ($) warrant	Sep. 30, 2016	Dec. 31, 2015
7.75% Senior Notes due 2019
Loss Contingencies [Line Items]
Stated interest rate				7.75%	7.75%
7.75% Senior Notes due 2022
Loss Contingencies [Line Items]
Stated interest rate				7.75%	7.75%
Subsequent Event
Loss Contingencies [Line Items]
Restructuring agreement, percentage of consenting term loan lenders		100.00%
Restructuring agreement, percentage of consenting noteholders		80.00%
Required notice period for material court filings		3 years
Subsequent Event | Minimum
Loss Contingencies [Line Items]
Required notice period for material court filings		1 day
Subsequent Event | 7.75% Senior Notes due 2019
Loss Contingencies [Line Items]
Stated interest rate		7.75%
Subsequent Event | 7.75% Senior Notes due 2022
Loss Contingencies [Line Items]
Stated interest rate		7.75%
Scenario, Forecast
Loss Contingencies [Line Items]
Debtor reorganization, number of warrants issued | warrant			7
Debtor reorganization, term of warrants issued			7 years
Debtor reorganization, warrants issued, percentage of common shares			6.00%
Debtor reorganization, assumed equity value			$ 1,789,000,000
Debt reorganization, percent of common shares issued to holders of unsecured debt			99.50%
Debt reorganization, percent of common shares issued to holders of unsecured debt, upon conversion of new convertible debt			51.22%
Debt reorganization, percent of subscription rights in new convertible notes, holders of unsecured notes			100.00%
Debt reorganization, amount of subscription rights to new convertible notes, holders of unsecured notes			$ 125,000,000
Debt reorganization, percent of common shares issued to holders of existing equity interests			0.50%
Debt reorganization, percent of common shares issued to holders of existing equity interests, upon conversion of new convertible debt			0.26%
Debtor reorganization, percentage of common shares available under incentive plan			10.00%
Debtor reorganization, backstop premium, percentage of rights offering	5.00%
Convertible notes	$ 6,250,000
Debtor reorganization, right of termination, business days to cure material breach	5 days
Debtor reorganization, potential termination fees	$ 6,250,000
Scenario, Forecast | Payment in Kind (PIK) Note
Loss Contingencies [Line Items]
Stated interest rate			9.00%
Aggregate principal amount			$ 131,250,000
Mandatorily convertible term			36 months