Fresh Start Accounting (Fair Value Accounts Payable and Accrued Liabilities) (Details 10) $ in Thousands	Sep. 18, 2020 USD ($)
Fresh-Start Adjustment [Line Items]
Fair value adjustment for the current portion of an unfavorable vendor contract	$ 3,500
Fair value adjustment for the current portion of Predecessor asset retirement obligation	689
Write-off accrued interest on NEJD pipeline financing	(451)
Fresh Start Adjustments
Fresh-Start Adjustment [Line Items]
Fair value adjustments to accounts payable and accrued liabilities	$ 3,738