Debt - Summary of Debt Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal repayment obligation	$ 1,928,528	$ 1,992,748
Unamortized DFC and discounts	(43,730)	(46,421)
Unamortized premium	193,237	203,883
Carrying value	2,078,035	2,150,210
Credit Facility, Secured Due January 2022
Debt Instrument [Line Items]
Principal repayment obligation		64,700
Carrying value		64,700
Term Loan, Secured, Due April 2024
Debt Instrument [Line Items]
Principal repayment obligation	966,319	968,756
Unamortized DFC and discounts	(21,359)	(22,498)
Carrying value	944,960	946,258
Second Lien Notes, Secured, Due July 2024
Debt Instrument [Line Items]
Principal repayment obligation	586,770	583,853
Unamortized premium	193,237	203,883
Carrying value	780,007	787,736
6.875% Unsecured Notes Due April 2022
Debt Instrument [Line Items]
Principal repayment obligation	150,439	150,439
Unamortized DFC and discounts	(10,077)	(11,146)
Carrying value	140,362	139,293
7.125% Unsecured Notes Due April 2025
Debt Instrument [Line Items]
Principal repayment obligation	225,000	225,000
Unamortized DFC and discounts	(12,294)	(12,777)
Carrying value	$ 212,706	$ 212,223

Debt instrument unamortized discount and deferred financing costs, net.

No definition available.

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- Definition

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt premium.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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