Debt - Exit Facility and Credit Facilities (Details) $ in Thousands						1 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($) item	Oct. 20, 2016 USD ($)	Jun. 02, 2015 USD ($)	Jun. 02, 2015 USD ($)	May 21, 2015 USD ($)	Feb. 29, 2016 USD ($)	Oct. 20, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Oct. 21, 2016 USD ($)	Apr. 01, 2016 USD ($)	Oct. 01, 2015	May 31, 2013 USD ($)	Oct. 01, 2012 USD ($)
Debt
Aggregate principal amount borrowed	$ 128,059
Exit Facility
Debt
Maximum borrowing capacity	170,000
Proceeds from revolving credit facility	128,100
Availability under the facility	0
Amount Of Reduction In Borrowing Base Under Exit Facility	40,000
Capital expenditure limitation for the 6 months ended December 31, 2016	50,000
Capital expenditure limitation for the year ended December 31, 2017	81,000
Capital expenditure limitation for the year ended December 31, 2018	85,000
Capital expenditure limitation for the year ended December 31, 2019	$ 78,000
Number of additional borrowing base redeterminations at company request per 6 month period following each scheduled borrowing base redetermination | item	0
Aggregate principal amount borrowed	$ 128,059
Weighted-average interest rate (as a percent)	5.50%
EBITDA to interest expense coverage ratio	3.00
Commitment fee (as a percent)	0.50
Exit Facility | LIBOR Loans
Debt
Interest rate added to base rate (as a percent)	4.50%
LIBOR floor rate	1.00%
Exit Facility | Minimum
Debt
Liquidity of the Company (as a percent)	20.0
Percentage of first priority mortgages to secure the Company's oil and gas properties	95.00%
Exit Facility | Maximum
Debt
Total net indebtedness to EBITDA	2.25
Total net indebtedness to EBITDA after April 1, 2018	3.00
Senior Revolving Credit Facility, due 2018
Debt
Permanent pay-down										$ 121,300
Senior Revolving Credit Facility, due 2018 | Exit Facility
Debt
Outstanding letters of credit amount	$ 1,900
Second Lien Notes
Debt
Permanent pay-down										$ 60,000
Predecessor
Debt
Proceeds from revolving credit facility							$ 249,384	$ 33,000	$ 165,000
Aggregate principal amount borrowed								1,795,930
Predecessor | Senior Revolving Credit Facility, due 2018
Debt
Maximum borrowing capacity		$ 750,000					750,000
Borrowing base		$ 252,000					$ 252,000
Proceeds from revolving credit facility						$ 249,200
Amount Of Reduction In Borrowing Base Under Exit Facility											$ 82,000
Commitment fee, option one (as a percent)		0.375%
Commitment fee, option two (as a percent)		0.50%
Predecessor | Senior Revolving Credit Facility, due 2018 | Minimum | LIBOR Loans
Debt
Interest rate added to base rate (as a percent)		2.00%
Predecessor | Senior Revolving Credit Facility, due 2018 | Maximum | LIBOR Loans
Debt
Interest rate added to base rate (as a percent)		3.00%
Predecessor | 2020 Senior Notes
Debt
Aggregate principal amount borrowed								293,625						$ 600,000
Exchanges			$ 306,400	$ 26,600	$ 279,800
Interest rate (as a percent)			10.75%	10.75%								10.75%
Predecessor | 2021 Senior Notes
Debt
Aggregate principal amount borrowed								347,652					$ 700,000
Exchanges			$ 352,300	$ 2,000	$ 350,300
Interest rate (as a percent)			9.25%	9.25%									9.25%
Predecessor | Second Lien Notes
Debt
Aggregate principal amount borrowed								625,000
Interest rate (as a percent)					10.00%
Predecessor | Third Lien Notes
Debt
Aggregate principal amount borrowed			$ 20,000	$ 20,000	$ 504,100			$ 529,653
Interest rate (as a percent)					12.00%
Cash interest rate					10.00%
PIK Interest					2.00%