XML 44 R33.htm IDEA: XBRL DOCUMENT v3.7.0.1
Long-Term Debt - Additional Information (Details) - USD ($)
shares in Millions
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 7 Months Ended
Feb. 10, 2017
Oct. 04, 2016
Feb. 09, 2017
Dec. 31, 2016
Feb. 09, 2017
Jun. 30, 2017
Jun. 30, 2016
May 11, 2017
Oct. 02, 2021
Oct. 03, 2018
Oct. 03, 2017
Convertible Debt | Convertible Notes                      
Debt Instrument                      
Debt outstanding       $ 268,780,000   $ 0          
Secured Notes | New Building Note                      
Debt Instrument                      
Debt outstanding       36,528,000   37,679,000          
Debt Instrument, Term of Interest Payments, Days Paid in Kind (after refinancing or repayment)               90 days      
Successor                      
Debt Instrument                      
Common stock issued for debt           268,779,000          
Successor | Revolving Credit Facility | First Lien Exit Facility                      
Debt Instrument                      
Maximum borrowing capacity   $ 425,000,000.0                  
Cash collateral released $ 50,000,000.0                    
Commitment fee   0.50%                  
Successor | Revolving Credit Facility | First Lien Exit Facility | Base Rate                      
Debt Instrument                      
Basis spread on variable rate   3.75%                  
Successor | Revolving Credit Facility | First Lien Exit Facility | LIBOR                      
Debt Instrument                      
Basis spread on variable rate   4.75%                  
Basis spread on variable rate floor   1.00%                  
Successor | Revolving Credit Facility | Credit Facility                      
Debt Instrument                      
Maximum borrowing capacity 600,000,000.0                    
Borrowing base $ 425,000,000.0                    
Percentage of proved reserves pledged as collateral 95.00%                    
Total net leverage ratio (no greater than) 3.50                    
Interest coverage ratio (no less than) 2.25                    
Aggregate principal amount of default trigger $ 25,000,000.0                    
Default trigger related to judgment liability $ 25,000,000.0                    
Debt outstanding           0          
Commitment fee 0.50%                    
Successor | Revolving Credit Facility | Credit Facility | Base Rate | Minimum                      
Debt Instrument                      
Basis spread on variable rate 2.00%                    
Successor | Revolving Credit Facility | Credit Facility | Base Rate | Maximum                      
Debt Instrument                      
Basis spread on variable rate 3.00%                    
Successor | Revolving Credit Facility | Credit Facility | LIBOR | Minimum                      
Debt Instrument                      
Basis spread on variable rate 3.00%                    
Successor | Revolving Credit Facility | Credit Facility | LIBOR | Maximum                      
Debt Instrument                      
Basis spread on variable rate 4.00%                    
Successor | Line of Credit                      
Debt Instrument                      
Outstanding letters of credit           $ 7,800,000          
Successor | Convertible Debt | Convertible Notes                      
Debt Instrument                      
Face amount of debt instrument   $ 281,800,000                  
Fair Value   445,700,000                  
Unamortized premium   $ 163,900,000                  
Conversion ratio for shares issuable per $1.00 in principal   0.05330841                  
Common stock issued for debt     $ 5,100,000 $ 13,000,000.0              
Common stock issued for debt (in shares) 14.1 15.0 0.3 0.7 1.0            
Notes exchanged/converted $ 263,700,000                    
Long-term debt, fixed interest rate           0.00%          
Successor | Secured Notes | New Building Note                      
Debt Instrument                      
Face amount of debt instrument   $ 35,000,000.0       $ 35,000,000.0          
Fair Value   36,600,000                  
Proceeds remitted to unsecured creditors   $ 26,800,000                  
Forecast | Secured Notes | New Building Note                      
Debt Instrument                      
Annual interest rate                 10.00% 8.00% 6.00%
Predecessor                      
Debt Instrument                      
Common stock issued for debt             $ 4,409,000