Supplemental Information About Oil & Natural Gas Producing Activities (Unaudited) - Calculation of Standardized Measure of Discounted Future Net Cash Flows (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016 $ / bbl $ / Mcf	Oct. 10, 2016 $ / bbl $ / Mcf	Dec. 31, 2015 $ / bbl $ / Mcf	Dec. 31, 2014 $ / bbl $ / Mcf
Successor | Crude Oil (MBbls)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices	38.49
Successor | Natural Gas (MMcf)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices | $ / Mcf	0.98
Successor | Natural Gas Liquids (MBbls)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices	14.59
Predecessor | Crude Oil (MBbls)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices		36.98	41.85	84.94
Predecessor | Natural Gas (MMcf)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices | $ / Mcf		1.24	1.71	4.70
Predecessor | Natural Gas Liquids (MBbls)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Prices		13.28	13.94	22.70