Subsequent Events (Details) - USD ($)							6 Months Ended
		Aug. 05, 2020	Aug. 01, 2020	Jul. 31, 2020	Jul. 06, 2020	Jul. 03, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Subsequent Event [Line Items]
Increase (Decrease) in Derivative Assets and Liabilities							$ 300,000	$ 300,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Fair Value of Derivative Measurement Date			Aug. 01, 2020
Principal amount of new 2024 Notes					$ 1,000
Principal amount of 2022 Notes tendered					1,000
Amount of 2022 Notes Tendered		$ 200,000,000.0
2024 Secured Notes Issued		$ 200,000,000.0
2024 Secured Notes Issue Date		Aug. 05, 2020
Principal amount of 2024 Secured Notes					$ 950
Increase (Decrease) in Derivative Assets and Liabilities			$ 4,200,000
2024 Secured Notes Exchange Offer					Jul. 06, 2020
Consent Effective Date of 2025 Notes		Aug. 05, 2020
Paid Consent Fees		$ 1,300,000
Aggregate Principal Amount of 2022 Notes	[1]				$ 200,000,000.0
Consent to Credit Agreement						Jul. 03, 2020
Consent Fees Paid		$ 500,000
Collateral Trust Agreement Amendment				Jul. 31, 2020
Collateral Trust Agreement Amendment Effective Date		Aug. 05, 2020
7.625% Notes
Subsequent Event [Line Items]
Fixed rate							7.625%		7.625%
Senior Notes, Noncurrent	[1]						$ 350,900,000		$ 351,100,000
7.625% Notes | Subsequent Event [Member]
Subsequent Event [Line Items]
Senior Notes, Noncurrent	[1]					$ 200,000,000.0

[1] The balance includes a fair value interest rate hedge adjustment, which increased the debt balance by $0.9 million and $1.1 million as of June 30, 2020 and December 31, 2019, respectively.