Summary of Significant Accounting Policies - Major Customers (Detail) - Customer Concentration Risk [Member] - Revenues [Member]	4 Months Ended	8 Months Ended	12 Months Ended
	May 04, 2017	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Total Reported Revenues			10.00%
Phillips 66 [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues		23.00%	27.00%	27.00%
Sinclair Oil & Gas Company [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues		19.00%	21.00%	21.00%
BP America Production Company [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues		10.00%	13.00%	0.00%
CIMA Energy [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues		11.00%	0.00%	10.00%
Predecessor [Member] | Phillips 66 [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues	19.00%
Predecessor [Member] | Sinclair Oil & Gas Company [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues	20.00%
Predecessor [Member] | BP America Production Company [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues	10.00%
Predecessor [Member] | CIMA Energy [Member]
Significant Accounting Policies [Line Items]
Total Reported Revenues	0.00%