Quarterly report pursuant to Section 13 or 15(d)

Debt - Narrative (Details)

v3.19.1
Debt - Narrative (Details)
1 Months Ended 3 Months Ended
Apr. 01, 2019
USD ($)
Sep. 30, 2016
USD ($)
Feb. 29, 2016
USD ($)
Jan. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
letters_of_credit
Mar. 31, 2018
USD ($)
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 $ 47,750,000  
Letter of Credit              
Debt Instrument [Line Items]              
Maximum borrowing on line         $ 1,000,000    
Letters of credit | letters_of_credit         2    
Revolving Credit Facility              
Debt Instrument [Line Items]              
Line of credit         $ 181,400,000    
Springing maturity period         181 days    
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 $ 47,750,000  
Term Loan | Interest Rate Swap | Designated as Hedging Instrument              
Debt Instrument [Line Items]              
Derivative, interest rate         8.04%    
Senior Notes 9.125 Percent Due 2020 | Senior Notes              
Debt Instrument [Line Items]              
Principal         $ 585,000,000    
Debt interest rate         9.125%    
Long-term debt         $ 585,000,000   585,000,000
Senior Notes 9.125 Percent Due 2020 | Senior Notes | Subsequent Event              
Debt Instrument [Line Items]              
Debt default term 30 days            
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]              
Principal   $ 1,100,000,000     1,072,500,000    
Long-term debt         1,072,500,000   1,075,250,000
Debt discount on purchase price   1.50%          
Line of credit facility, periodic payment         $ 2,750,000    
Springing maturity period         181 days    
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%    
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    
Springing maturity period         181 days    
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%