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v3.10.0.1

Long-term Debt - Senior Notes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Sep. 20, 2017
Debt Instrument [Line Items] |  |  |  |  |
Payments of Financing Costs | $ 1,100 |  |  |  |
Debt financing and related expenses |  | $ 0 | $ 6,640 | $ 0 |
Senior Notes [Member] | 4.875% Senior Unsecured Notes Due 2025 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount |  | $ 300,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.875% |  |  |
Debt Instrument, Maturity Date |  | Oct. 15, 2025 |  |  |
Payments of Financing Costs | 5,000 |  |  |  |
Debt Issuance Costs, Noncurrent, Net |  |  |  |  | $ 4,900
Debt financing and related expenses | 100 |  |  |  |
Debt Instrument, Date of First Required Payment |  | Apr. 15, 2018 |  |  |
Senior Notes [Member] | 4.875% Senior Unsecured Notes Due 2025 [Member] | Debt Instrument, Redemption, Period One [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage of principal that can be redeemed with cash proceeds from an equity offering |  | 35.00% |  |  |
Debt instrument redemption price with net proceeds from equity offering |  | 104.875% |  |  |
Debt Instrument, Redemption Price, Percentage |  | 100.00% |  |  |
Senior Notes [Member] | 4.875% Senior Unsecured Notes Due 2025 [Member] | Debt Instrument, Redemption, Period Two [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 102.438% |  |  |
Senior Notes [Member] | 4.875% Senior Unsecured Notes Due 2025 [Member] | Debt Instrument, Redemption, Period Three [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 101.219% |  |  |
Senior Notes [Member] | 4.875% Senior Unsecured Notes Due 2025 [Member] | Debt Instrument, Redemption, Period Four [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 100.00% |  |  |
Senior Secured Term Loan A [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of Debt | 250,900 |  |  |  |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities | 400 |  |  |  |
Receivables Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of Debt | $ 41,700 |  |  |  |

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