Payables and Accrued Liabilities - Additional information (Details) $ in Thousands	Feb. 09, 2018 USD ($)
Fresh-Start Adjustments [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Reduction to payables and accrued liabilities	$ 7,444

Amount of fresh-start adjustment to accounts payable.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

Name:	us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant