Significant Accounting Policies - Schedule of Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,186,291
Line of Credit | Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2014 Revolver Loan | Line of Credit | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2014 Revolver Loan | Line of Credit | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2014 First Lien Credit Agreement | Line of Credit | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2014 First Lien Credit Agreement | Line of Credit | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2017 Revolver Loan, Maturing 2022 | Senior Notes | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2017 Revolver Loan, Maturing 2022 | Senior Notes | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0
2017 Term Loan, Maturing 2024 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,280,532
2017 Term Loan, Maturing 2024 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,267,189
Senior Unsecured Notes Due 2021 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	409,235
Senior Unsecured Notes Due 2021 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	409,235
Senior Unsecured Notes Due 2021 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	422,535
Senior Unsecured Notes Due 2025 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	370,000
Senior Unsecured Notes Due 2025 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	370,000
Senior Unsecured Notes Due 2025 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 346,413
Predecessor | Line of Credit | Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		$ 85,000
Predecessor | 2014 Revolver Loan | Line of Credit | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		85,000
Predecessor | 2014 Revolver Loan | Line of Credit | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		85,000
Predecessor | 2014 First Lien Credit Agreement | Line of Credit | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		911,784
Predecessor | 2014 First Lien Credit Agreement | Line of Credit | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		917,528
Predecessor | 2017 Revolver Loan, Maturing 2022 | Senior Notes | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | 2017 Revolver Loan, Maturing 2022 | Senior Notes | Revolving Credit Facility | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | 2017 Term Loan, Maturing 2024 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | 2017 Term Loan, Maturing 2024 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | Senior Unsecured Notes Due 2021 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		400,000
Predecessor | Senior Unsecured Notes Due 2021 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		387,942
Predecessor | Senior Unsecured Notes Due 2021 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		412,189
Predecessor | Senior Unsecured Notes Due 2025 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | Senior Unsecured Notes Due 2025 | Senior Notes | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		0
Predecessor | Senior Unsecured Notes Due 2025 | Senior Notes | Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		$ 0