XML 74 R34.htm IDEA: XBRL DOCUMENT v3.19.3
Long-Term Debt - Additional Information (Details)
5 Months Ended 9 Months Ended
Apr. 26, 2019
Apr. 25, 2019
Mar. 15, 2019
USD ($)
May 04, 2018
Nov. 30, 2017
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
redetermination
Oct. 29, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                  
Document Period End Date             Sep. 30, 2019    
Senior Notes                  
Debt Instrument [Line Items]                  
Debt discount           $ 3,643,000 $ 3,643,000   $ 0
Percentage of principal amount, eligible to be redeemed             35.00%    
Redemption price percentage             100.00%    
Percentage of principal amount, redeemable             65.00%    
Percentage of principal amount, event of default             25.00%    
Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Borrowing base           1,200,000,000 $ 1,200,000,000 $ 1,200,000,000  
Elected commitments           800,000,000.0 800,000,000.0    
Line of credit, term       5 years          
Borrowings, outstanding amount           120,000,000.0 120,000,000.0    
Remaining borrowing capacity, net of current borrowings outstanding           679,200,000 679,200,000    
Maximum borrowing base           1,500,000,000 $ 1,500,000,000    
Number of optional borrowing base redeterminations | redetermination             2    
Letter of Credit | Line of Credit                  
Debt Instrument [Line Items]                  
Letters of credit outstanding           $ 800,000 $ 800,000    
Minimum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Commitment Fee Percentage           0.375%      
Debt instrument, covenant, minimum current ratio             1.0    
Maximum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Commitment Fee Percentage           0.50%      
Debt instrument, covenant, maximum leverage ratio 3.0           4.0    
Senior Notes Due 2027 | Senior Notes                  
Debt Instrument [Line Items]                  
Long-term debt     $ 500,000,000.0            
Interest rate, stated percentage     6.875%     6.875% 6.875%    
Private placement price as percentage of par     99.235%            
Proceeds from borrowings, net of issuance costs     $ 489,000,000.0            
Debt discount     3,800,000            
Debt issuance costs     $ 7,200,000            
Redemption price percentage     106.875%            
Percentage of principal amount, change in control     101.00%            
Senior Notes Due 2026 | Senior Notes                  
Debt Instrument [Line Items]                  
Long-term debt         $ 400,000,000.0        
Interest rate, stated percentage         5.375% 5.375% 5.375%    
Proceeds from borrowings, net of issuance costs         $ 391,000,000.0        
Debt issuance costs         $ 9,000,000.0        
Redemption price percentage         105.375%        
Percentage of principal amount, change in control         101.00%        
Adjusted For Statutory Reserve Requirements - London Interbank Offered Rate (LIBOR) | Minimum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   1.50%       1.25%      
Adjusted For Statutory Reserve Requirements - London Interbank Offered Rate (LIBOR) | Maximum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   2.50%       2.25%      
Federal Funds Effective Swap Rate | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate           0.50%      
One-Month London Interbank Offered Rate (LIBOR) | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate           1.00%      
London Interbank Offered Rate (LIBOR) | Minimum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   0.50%       0.25%      
London Interbank Offered Rate (LIBOR) | Maximum | Revolving Credit Facility | Line of Credit                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   1.50%       1.25%