Quarterly report pursuant to Section 13 or 15(d)

Debt - Narrative (Details)

v3.19.2
Debt - Narrative (Details)
1 Months Ended 6 Months Ended
May 20, 2019
USD ($)
Sep. 30, 2016
USD ($)
Feb. 29, 2016
USD ($)
May 20, 2019
Jan. 31, 2019
USD ($)
Jun. 30, 2019
USD ($)
letters_of_credit
Jun. 30, 2018
USD ($)
Apr. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                  
Long-term debt           $ 1,838,900,000     $ 1,816,450,000
Payments on long-term debt           18,400,000 $ 95,200,000    
Letter of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing on line           $ 1,000,000      
Letters of credit | letters_of_credit           2      
LIBOR | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Commitment fee for line of credit           0.50%      
Principal Owner                  
Debt Instrument [Line Items]                  
Principal being treated as a capital contribution     $ 88,000,000   $ 2,250,000        
Parent Company                  
Debt Instrument [Line Items]                  
Payments on long-term debt           $ 18,400,000 $ 95,200,000    
Senior Notes 9.125 Percent Due 2020 | Senior Notes                  
Debt Instrument [Line Items]                  
Long-term debt           $ 585,000,000     585,000,000
Debt interest rate           9.125%      
Interest payment not made               $ 26,691,000  
Promissory Note Due 2020 | Promissory Note                  
Debt Instrument [Line Items]                  
Long-term debt     $ 12,000,000     $ 0     12,000,000
Payments on long-term debt         $ 9,750,000        
Promissory Note Due 2020 | Promissory Note | Parent Company                  
Debt Instrument [Line Items]                  
Debt interest rate     12.50%            
Extinguishment of debt     $ 100,000,000            
Term Loan Due September 2022 | Term Loan                  
Debt Instrument [Line Items]                  
Long-term debt           1,072,500,000     1,075,250,000
Debt instrument, face amount   $ 1,100,000,000       1,072,500,000      
Debt discount on purchase price   1.50%              
Line of credit facility, periodic payment           $ 2,750,000      
Additional default interest rate       2.00%          
Term Loan Due September 2022 | Term Loan | LIBOR                  
Debt Instrument [Line Items]                  
Basis spread on variable debt           5.50%      
Floor on variable debt           1.00%      
Term Loan Due September 2022 | Term Loan | Alternate Base                  
Debt Instrument [Line Items]                  
Basis spread on variable debt           4.50%      
Revolving Credit Facility Due 2021 | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Long-term debt           $ 181,400,000     $ 144,200,000
Maximum borrowing on line   $ 295,000,000       $ 295,000,000      
Revolving Credit Facility Due 2021 | Revolving Credit Facility | LIBOR                  
Debt Instrument [Line Items]                  
Basis spread on variable debt           4.00%      
Floor on variable debt           1.00%      
Revolving Credit Facility Waiver Agreement | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Maximum borrowing on line           $ 195,000,000      
Revolving Credit Facility Waiver Agreement | Revolving Credit Facility | Alternate Base                  
Debt Instrument [Line Items]                  
Basis spread on variable debt           3.00%      
Restructuring Support Agreement                  
Debt Instrument [Line Items]                  
Debt to be converted to equity (up to) $ 685,000,000                
Restructuring Support Agreement | Senior Notes 9.125 Percent Due 2020 | Senior Notes                  
Debt Instrument [Line Items]                  
Debt interest rate 9.125%     9.125%          
Debt to be converted to equity (up to) $ 585,000,000                
Restructuring Support Agreement | Term Loan Due September 2022 | Term Loan                  
Debt Instrument [Line Items]                  
Debt to be converted to equity (up to) $ 100,000,000