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Long-Term Debt - Narrative (Details)
1 Months Ended 12 Months Ended
Apr. 30, 2020
USD ($)
day
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2020
USD ($)
Debt Instrument [Line Items]          
Debt instrument, face amount $ 1,000        
Loss (Gain) on Debt Extinguishment   $ 33,737,000 $ (10,101,000) $ 7,614,000  
Proceeds from issuance of Convertible Notes   $ 0 334,650,000 0  
Closing stock price (in usd per share) | $ / shares   $ 13.75      
Cost incurred with Capped Calls   $ 0 35,673,000 $ 0  
Senior Notes due April 2030          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 400,000,000      
Stated rate, debt instrument   0.0475%      
Unamortized Discount   $ 5,000,000      
Senior Notes due March 2026          
Debt Instrument [Line Items]          
Debt instrument, face amount     $ 400,000,000    
Stated rate, debt instrument   6.50% 0.065%    
Purchase of outstanding debt   $ 400,000,000      
Loss (Gain) on Debt Extinguishment   25,727,000      
Cardinal States Gathering Company Credit Facility          
Debt Instrument [Line Items]          
Purchase of outstanding debt   107,705,000      
Loss (Gain) on Debt Extinguishment   5,763,000      
CSG Holdings II LLC Credit Facility          
Debt Instrument [Line Items]          
Purchase of outstanding debt   39,726,000      
Loss (Gain) on Debt Extinguishment   2,247,000      
5.875% Senior Notes due 2022          
Debt Instrument [Line Items]          
Stated rate, debt instrument     5.875% 5.875%  
Purchase of outstanding debt     $ 894,307,000 $ 400,000,000  
Loss (Gain) on Debt Extinguishment       7,614,000  
Senior Notes due in January 2029 | Debt Instrument, Issuance, Period Two          
Debt Instrument [Line Items]          
Debt instrument, face amount     $ 500,000,000    
Stated rate, debt instrument     6.00%    
Senior Notes due March 2027 at 7.25%          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 700,000,000 $ 700,000,000 $ 500,000,000  
Stated rate, debt instrument   0.0725%      
Convertible 2.25% Senior Notes Due 2026 | Convertible Debt          
Debt Instrument [Line Items]          
Debt instrument, face amount $ 345,000,000        
Stated rate, debt instrument 2.25%        
Unamortized Discount   $ 85,950,000 101,367,000    
Conversion rate 77.8816        
Initial conversion price (in usd per share) | $ / shares $ 12.84 $ 12.84      
Amount of if-converted value in excess of principal amount   $ 98,341,000      
Debt issuance costs gross $ 10,350,000        
Convertible 2.25% Senior Notes Due 2026 | Convertible Debt | Debt Instrument, Redemption, Period One          
Debt Instrument [Line Items]          
Threshold percentage of stock price trigger 130.00%        
Threshold trading days | day 20        
Threshold consecutive trading days | day 30        
Convertible 2.25% Senior Notes Due 2026 | Convertible Debt | Debt Instrument, Redemption, Period Two          
Debt Instrument [Line Items]          
Threshold percentage of stock price trigger 98.00%        
Threshold trading days | day 5        
Threshold consecutive trading days | day 10        
Convertible 2.25% Senior Notes Due 2026, Additional Option To Initial Purchasers | Convertible Debt          
Debt Instrument [Line Items]          
Debt instrument, face amount $ 45,000,000        
Convertible 2.25% Senior Notes Due 2026, Liability Component | Convertible Debt          
Debt Instrument [Line Items]          
Debt issuance costs gross 7,024,000        
Convertible 2.25% Senior Notes Due 2026, Equity Component | Convertible Debt          
Debt Instrument [Line Items]          
Debt issuance costs gross 3,326,000        
Private Placement | Senior Notes due March 2027 at 7.25% | Debt Instrument, Issuance, Period Two          
Debt Instrument [Line Items]          
Debt instrument, face amount     $ 200,000,000    
Stated rate, debt instrument     7.25%    
Unamortized premium     $ 7,000,000    
Redemption price, percentage of principal amount redeemed     103.50%    
Effective yield (as a percent)     6.34%    
Capped Call Transaction          
Debt Instrument [Line Items]          
Cost incurred with Capped Calls $ 35,673,000        
Minimum | Capped Call Transaction | Call Option          
Debt Instrument [Line Items]          
Price per share (in usd per share) | $ / shares $ 12.84        
Maximum | Capped Call Transaction | Call Option          
Debt Instrument [Line Items]          
Price per share (in usd per share) | $ / shares $ 18.19        
Credit Facility          
Debt Instrument [Line Items]          
Debt instrument, face amount         $ 175,000,000
Credit Facility | Cardinal States Gathering Company Credit Facility          
Debt Instrument [Line Items]          
Debt instrument, face amount     $ 114,985,000    
Maximum borrowing capacity     125,000,000    
Credit Facility | CSG Holdings II LLC Credit Facility          
Debt Instrument [Line Items]          
Debt instrument, face amount     45,559,000    
Maximum borrowing capacity     $ 50,000,000