Voluntary Reorganization under Chapter 11 - Components of Reorganization Items (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reorganizations [Abstract]
Professional fees		$ 18,688
DIP Credit Agreement financing fees		6,202
Write-off of prepetition deferred financing costs		19,637
Reorganization items	$ 44,500	$ 44,527	$ 0	$ 0

Amount of reorganization items related to debtor-in-possession facility financing costs.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=116635682&loc=d3e55730-112764

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

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Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 3
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Total amount of reorganization items.

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