Summary of Significant Accounting Policies - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ (21)	$ (21)
Accounts receivable	53,595	62,120
Oil, gas and NGL sales
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable gross	34,977	50,171
Due from joint interest owners
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable gross	16,762	9,551
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable gross	$ 1,877	$ 2,419