XML 44 R34.htm IDEA: XBRL DOCUMENT v3.5.0.2
Chapter 11 Proceedings - Narrative (Details)
$ / shares in Units, shares in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 04, 2016
USD ($)
director
shares
$ / shares
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Aug. 03, 2020
Oct. 03, 2018
Oct. 03, 2017
Oct. 31, 2015
USD ($)
Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Notes exchanged/converted       $ 232,100,000            
8.75% Senior Secured Notes | Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.75%   8.75%            
Face amount of debt instrument     $ 1,250,000,000.0   $ 1,250,000,000.0         $ 78,000,000.0
Face value of long-term debt   $ 1,328,000,000   $ 1,328,000,000   $ 1,265,814,000        
8.75% Senior Secured Notes | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.75%   8.75%   8.75%        
8.75% Senior Notes due 2020 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.75%   8.75%   8.75%        
Face value of long-term debt   $ 395,935,000   $ 395,935,000   $ 389,232,000        
7.5% Senior Notes due 2021 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   7.50%   7.50%   7.50%        
Face value of long-term debt   $ 757,767,000   $ 757,767,000   $ 751,087,000        
8.125% Senior Notes due 2022 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.125% 8.125% 8.125% 8.125% 8.125%        
Face value of long-term debt   $ 527,737,000   $ 527,737,000   $ 518,693,000        
8.125% Convertible Senior Notes due 2022                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.125%   8.125%            
8.125% Convertible Senior Notes due 2022 | Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.125% 8.125% 8.125% 8.125%          
Notes exchanged/converted   $ 0   $ 200,500,000            
Face value of long-term debt   $ 40,694,000   $ 40,694,000   $ 78,290,000        
8.125% Convertible Senior Notes due 2022 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   8.125%   8.125%   8.125%        
7.5% Convertible Senior Notes due 2023                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   7.50%   7.50%            
7.5% Convertible Senior Notes due 2023 | Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   7.50% 7.50% 7.50% 7.50%          
Notes exchanged/converted       $ 31,600,000            
Face value of long-term debt   $ 46,900,000   $ 46,900,000   $ 24,393,000        
7.5% Convertible Senior Notes due 2023 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   7.50%   7.50%   7.50%        
7.5% Senior Notes due 2023 | Senior Notes                    
Restructuring Cost and Reserve [Line Items]                    
Long-term debt, fixed interest rate   7.50%   7.50%   7.50%        
Face value of long-term debt   $ 543,561,000   $ 543,561,000   $ 534,869,000        
7.0% Convertible perpetual preferred stock                    
Restructuring Cost and Reserve [Line Items]                    
Preferred stock, dividend rate, percentage     7.00% 7.00% 7.00% 7.00%        
8.5% Convertible perpetual preferred stock                    
Restructuring Cost and Reserve [Line Items]                    
Preferred stock, dividend rate, percentage     8.50% 8.50% 8.50% 8.50%        
Forecast | New Building Note | Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Annual interest rate             10.00% 8.00% 6.00%  
Subsequent Event                    
Restructuring Cost and Reserve [Line Items]                    
Face value of long-term debt $ 316,800,000                  
Subsequent Event | Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Number of shares issuable under convertible securities | shares 15.0                  
Subsequent Event | New Credit Facility | Revolving Credit Facility                    
Restructuring Cost and Reserve [Line Items]                    
Maximum borrowing capacity $ 425,000,000.0                  
Subsequent Event | New Convertible Debt | Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Face amount of debt instrument 281,800,000                  
Subsequent Event | New Building Note | Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Face amount of debt instrument 35,000,000.0                  
Proceeds from issuance of debt $ 26,800,000                  
Subsequent Event | Plan of Reorganization                    
Restructuring Cost and Reserve [Line Items]                    
Number of employee directors | director 5                  
Number of non-employee directors | director 4                  
Subsequent Event | Plan of Reorganization | Minimum                    
Restructuring Cost and Reserve [Line Items]                    
Estimated enterprise value of Successor Company $ 1,040,000,000                  
Subsequent Event | Plan of Reorganization | Maximum                    
Restructuring Cost and Reserve [Line Items]                    
Estimated enterprise value of Successor Company 1,320,000,000                  
Subsequent Event | Plan of Reorganization | Holders of Senior Credit Facility | Revolving Credit Facility                    
Restructuring Cost and Reserve [Line Items]                    
Cash payments for prepetition obligations 35,000,000                  
Subsequent Event | Plan of Reorganization | Holders of Senior Secured Notes | Convertible Debt                    
Restructuring Cost and Reserve [Line Items]                    
Face amount of debt instrument $ 281,800,000                  
Annual interest rate 0.00%                  
Number of shares issuable under convertible securities | shares 15.0                  
Subsequent Event | Plan of Reorganization | Holders of Unsecured Claims                    
Restructuring Cost and Reserve [Line Items]                    
Cash payments for prepetition obligations $ 36,700,000                  
Subsequent Event | Plan of Reorganization | Series A Warrants                    
Restructuring Cost and Reserve [Line Items]                    
Shares issued | shares 4.9                  
Subsequent Event | Plan of Reorganization | Series A Warrants | Holders of Unsecured Claims                    
Restructuring Cost and Reserve [Line Items]                    
Shares issued | shares 4.9                  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 41.34                  
Subsequent Event | Plan of Reorganization | Series B Warrants | Holders of Unsecured Claims                    
Restructuring Cost and Reserve [Line Items]                    
Shares issued | shares 2.1                  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 42.03                  
Subsequent Event | Plan of Reorganization | New Credit Facility                    
Restructuring Cost and Reserve [Line Items]                    
Cash collateral $ 50,000,000                  
Cash collateral to be released upon delivery of acceptable business plan 12,500,000                  
Cash collateral to be released upon achievement for two consecutive quarters of certain milestones 12,500,000                  
Cash collateral to be released upon meeting minimum ratio of proved producing reserves to aggregate principal loan commitments $ 25,000,000                  
Minimum ratio of proved producing reserves to aggregate principal loan commitments 2.00                  
Subsequent Event | Plan of Reorganization | New Credit Facility | Revolving Credit Facility                    
Restructuring Cost and Reserve [Line Items]                    
Maximum borrowing capacity $ 425,000,000                  
Subsequent Event | Plan of Reorganization | 8.75% Senior Secured Notes | Holders of Senior Secured Notes | Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Notes exchanged/converted 78,000,000                  
Subsequent Event | Plan of Reorganization | New Building Note | Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Face amount of debt instrument 35,000,000.0                  
Proceeds from issuance of debt $ 26,800,000                  
Subsequent Event | Plan of Reorganization | New Common Stock                    
Restructuring Cost and Reserve [Line Items]                    
Common stock, shares authorized | shares 18.9                  
Subsequent Event | Plan of Reorganization | New Common Stock | Holders of Senior Secured Notes                    
Restructuring Cost and Reserve [Line Items]                    
Shares issued | shares 13.7                  
Subsequent Event | Plan of Reorganization | New Common Stock | Holders of Unsecured Claims                    
Restructuring Cost and Reserve [Line Items]                    
Number of shares to be issued | shares 5.7                  
Shares issued | shares 5.2                  
Subsequent Event | Plan of Reorganization | Series B Warrants                    
Restructuring Cost and Reserve [Line Items]                    
Shares issued | shares 2.1                  
Subsequent Event | Plan of Reorganization | 7.0% Convertible perpetual preferred stock                    
Restructuring Cost and Reserve [Line Items]                    
Preferred stock, dividend rate, percentage 7.00%                  
Subsequent Event | Plan of Reorganization | 8.5% Convertible perpetual preferred stock                    
Restructuring Cost and Reserve [Line Items]                    
Preferred stock, dividend rate, percentage 8.50%