Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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

- References

No definition available.

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 22, 2016	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2015
Successor [Member]
Property, Plant and Equipment [Abstract]
Proved oil and gas properties		$ 480,499	$ 658,519
Unproved oil and gas properties		33,354	50,377
Furniture, fixtures, and other equipment		3,221	3,270
Less - Accumulated depreciation, depletion, and amortization		(169,879)	(216,769)
Property, Plant and Equipment, Net		347,195	495,397
Accounts Payable and Accrued Liabilities [Abstract]
Trade accounts payable		12,372	20,884
Accrued operating expenses		2,990	3,490
Accrued payroll costs		4,730	5,334
Asset retirement obligation - current portion		9,965	2,109
Accrued taxes		3,937	3,898
Accrued Professional Fees, Current		3,075	2,784
Other payables		3,365	5,938
Total accounts payable and accrued liabilities		$ 40,434	$ 44,437
Kinder Morgan Concentration Risk [Member] \| Successor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage		38.00%	48.00%
Kinder Morgan Concentration Risk [Member] \| Predecessor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage	20.00%			27.00%
Plains Marketing Concentration Risk [Member] \| Successor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage		14.00%	0.00%
Plains Marketing Concentration Risk [Member] \| Predecessor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage	14.00%			18.00%
Howard Energy Concentration Risk [Member] \| Successor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage		0.00%	0.00%
Howard Energy Concentration Risk [Member] \| Predecessor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage	11.00%			13.00%
Southcross Concentration Risk [Member] \| Successor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage		0.00%	0.00%
Southcross Concentration Risk [Member] \| Predecessor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage	11.00%			0.00%
Shell Oil Company Concentration Risk [Member] \| Successor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage		15.00%	0.00%
Shell Oil Company Concentration Risk [Member] \| Predecessor [Member]
Accounts Payable and Accrued Liabilities [Abstract]
Concentration Risk, Percentage	19.00%			16.00%