Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Debt and Debt Issuance Costs - Senior Notes (Details) - Senior Notes - USD ($)	May 23, 2019	Feb. 15, 2018	May 20, 2019
7.75% Senior Notes due 2027
Debt Instrument [Line Items]
Face amount			$ 300,000,000
Stated interest rate			7.75%
Redemption price (as a percent)	100.00%
7.75% Senior Notes due 2027 \| 2023
Debt Instrument [Line Items]
Redemption price (as a percent)	103.875%
7.75% Senior Notes due 2027 \| 2024
Debt Instrument [Line Items]
Redemption price (as a percent)	101.938%
7.75% Senior Notes due 2027 \| 2025 and Thereafter
Debt Instrument [Line Items]
Redemption price (as a percent)	100.00%
6.25% Senior Notes
Debt Instrument [Line Items]
Face amount		$ 300,000,000
Stated interest rate		6.25%
Redemption price (as a percent)		100.00%
6.25% Senior Notes \| 2023
Debt Instrument [Line Items]
Redemption price (as a percent)		101.563%
6.25% Senior Notes \| 2022
Debt Instrument [Line Items]
Redemption price (as a percent)		103.125%
6.25% Senior Notes \| 2024 and Thereafter
Debt Instrument [Line Items]
Redemption price (as a percent)		100.00%