Quarterly report pursuant to Section 13 or 15(d)

Going Concern - Narrative (Details)

v3.19.2
Going Concern - Narrative (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Sep. 30, 2016
Debt Instrument [Line Items]      
Long-term debt $ 1,838,900,000 $ 1,816,450,000  
Senior Notes 9.125 Percent Due 2020 | Senior Notes      
Debt Instrument [Line Items]      
Long-term debt 585,000,000 585,000,000  
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 1,072,500,000   $ 1,100,000,000
Revolving Credit Facility Due 2021 | Revolving Credit Facility      
Debt Instrument [Line Items]      
Long-term debt $ 181,400,000 $ 144,200,000