Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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

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

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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Debt and Debt Issuance Costs - Senior Notes (Details) - USD ($)				12 Months Ended
	May 23, 2019	May 20, 2019	Feb. 15, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt				$ 289,271,000	$ 288,131,000	$ 0
Senior Notes \| 7.75% Senior Notes due 2027
Debt Instrument [Line Items]
Face amount		$ 300,000,000.0
Stated interest rate		7.75%		7.75%
Proceeds from issuance of senior long-term debt		$ 289,300,000
Redemption price (as a percent)	100.00%
Senior Notes \| 7.75% Senior Notes due 2027 \| 2023
Debt Instrument [Line Items]
Redemption price (as a percent)	103.875%
Senior Notes \| 7.75% Senior Notes due 2027 \| 2024
Debt Instrument [Line Items]
Redemption price (as a percent)	101.938%
Senior Notes \| 7.75% Senior Notes due 2027 \| 2025 and Thereafter
Debt Instrument [Line Items]
Redemption price (as a percent)	100.00%
Senior Notes \| 6.25% Senior Notes
Debt Instrument [Line Items]
Stated interest rate			6.25%	6.25%
Proceeds from issuance of senior long-term debt			$ 288,100,000
Redemption price (as a percent)			100.00%
Long-term debt, gross			$ 300,000,000.0	$ 300,000,000	$ 300,000,000
Senior Notes \| 6.25% Senior Notes \| 2023
Debt Instrument [Line Items]
Redemption price (as a percent)			101.563%
Senior Notes \| 6.25% Senior Notes \| 2022
Debt Instrument [Line Items]
Redemption price (as a percent)			103.125%
Senior Notes \| 6.25% Senior Notes \| 2024 and Thereafter
Debt Instrument [Line Items]
Redemption price (as a percent)			100.00%