Supplemental oil, NGL and natural gas disclosures (unaudited) - Incurred Capital Expenditures in oil and natural gas property acquisition, exploration and development activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property acquisition costs:
Evaluated	$ 899,128	$ 11,368	$ 126,372
Unevaluated	198,770	25,549	83,738
Exploration costs	33,482	17,337	19,954
Development costs	410,855	326,823	450,501
Total oil and natural gas properties incurred capital expenditures	$ 1,542,235	$ 381,077	$ 680,565