Summary of significant accounting policies - Revision for Adjustment to Tax Basis of Oil and Natural Gas Properties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred tax liability	$ 49,749	$ 73,989
Additional paid-in capital	632,075	$ 653,174
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred tax liability	91,592
Additional paid-in capital	590,232
Correction to Prior Period, Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred tax liability	(41,843)
Additional paid-in capital	41,843
Prior year standardized measure of discounted future net cash flows	$ 30,000