Revenue Recognition (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 08, 2019	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue receivable		$ 3,856	$ 3,856
Revenue		8,482
Oil production
Disaggregation of Revenue [Line Items]
Revenue receivable		1,100	1,100
Revenue		2,183
Natural gas production
Disaggregation of Revenue [Line Items]
Revenue receivable		2,200	2,200
Revenue		5,009
Natural gas liquids production
Disaggregation of Revenue [Line Items]
Revenue receivable		600	$ 600
Revenue		$ 1,289
Minimum
Disaggregation of Revenue [Line Items]
Revenue recognized, period			1 month
Maximum
Disaggregation of Revenue [Line Items]
Revenue recognized, period			2 months
Predecessor
Disaggregation of Revenue [Line Items]
Revenue receivable					$ 6,364
Revenue	$ 6,657			$ 24,917
Predecessor | Oil production
Disaggregation of Revenue [Line Items]
Revenue	1,502			6,322
Predecessor | Natural gas production
Disaggregation of Revenue [Line Items]
Revenue	4,130			14,884
Predecessor | Natural gas liquids production
Disaggregation of Revenue [Line Items]
Revenue	$ 1,025			$ 3,711